Publications

Publications du LECD sur son site HAL

• [hal-01480088] The Relative Importance of Language in Guiding Social Preferences Through Development

  1 mars 2017

  In this paper, we review evidence from infants, toddlers, and preschoolers to tackle the question of how individuals orient preferences and actions toward social partners and how these preferences change over development.
• [hal-01478455] Suprasegmental information affects processing of talking faces at birth

  28 février 2017

  From birth, newborns show a preference for faces talking a native language compared to silent faces. The present study addresses two questions that remained unanswered by previous research: (a) Does the familiarity with the language play a role in this process and (b) Are all the linguistic and paralinguistic cues necessary in this case? Experiment 1 extended newborns' preference for native speakers to non-native ones. Given that fetuses and newborns are sensitive to the prosodic characteristics of speech, Experiments 2 and 3 presented faces talking native and nonnative languages with the speech stream being low-pass filtered. Results showed that newborns preferred looking at a person who talked to them even when only the prosodic cues were provided for both languages. Nonetheless, a familiarity preference for the previously talking face is observed in the "normal speech" condition (i.e., Experiment 1) and a novelty preference in the "filtered speech" condition (Experiments 2 and 3). This asymmetry reveals that newborns process these two types of stimuli differently and that they may already be sensitive to a mismatch between the articulatory movements of the face and the corresponding speech sounds.
• [hal-01480085] Psychological Disorders and Ecological Factors Affect the Development of Executive Functions: Some Perspectives

  3 février 2021

  The links between deficits in executive functions (EFs) (e.g., mental flexibility, inhibition capacities, etc.) and some psychological disorders (e.g., anxiety and depressive disorders) have been investigated in the past decades or so.
• [hal-04035198] Intensity seeking and novelty seeking: Their relationship to adolescent risk behavior and occupational interests

  17 mars 2023

  The aim of this study was to test the hypothesis that individual differences in sensation seeking account for adolescents' risk behavior and vocational interests. We relied on Arnett's (1994) conceptualization of sensation seeking as involving a need for intensity and a need for novelty, neither of which includes the willingness to take risks. Self-report scales measuring intensity seeking, novelty seeking, impulsiveness, risk behavior and vocational interest were administered to 636 adolescents. New scales measuring intensity seeking (IS) and novelty seeking (NS) were used. Regression analyses showed that IS and to a lesser extent NS accounted for a small part of variance of risk behavior, independent of impulsiveness. IS and NS accounted for vocational interests. The discussion emphasizes the importance of disentangling sensation seeking as a trait from willingness to take risks when one intends to analyse the effect of the former on risk behavior.
• [hal-04931960] Adolescents' sociosexual orientation is related to attachment to their same-sex parent

  6 février 2025

  We set out to show that sociosexual orientation (SSO) and erotophilia are two different traits that can be evidenced as early as middle adolescence, and to examine their associations with attachment to parents. Self-report scales measuring SSO, erotophilia, and attachment to the mother and the father were administered to 289 12- to 17-year-olds. Based on an exploratory factor analysis, SSO and erotophilia are two different, consistent dimensions in this age range. A six-month test-retest revealed a moderate-to-high rank-order stability of the two traits, which were positively and moderately correlated. Boys scored higher than girls on both traits. During the six-month interval between T1 and T2, erotophilia increased whereas SSO did not change. Regression analyses showed that a positive perception of attachment to the same-sex parent among boys accounted for SSO, regardless of perceived attachment to the other-sex parent. This held true for girls also, but to a lesser extent. In the discussion, we emphasize the differences between boys' and girls' mating behavior, and the differences between attachment to same-sex vs other-sex parents as possible influences on SSO.
• [hal-00087299] Estimating the complexity of bird song by using capture-recapture approaches from community ecology

  21 juillet 2006

  [...]
• [hal-01478482] Heterospecific Exposure Affects the Development of Secondary Sexual Traits in Male Zebra Finches (Taeniopygia Guttata)

  28 février 2017

  In many animal species, social signals can affect the reproductive physiology and behaviour of conspecifics. In a few species that exhibit vocal learning, exposure to conspecific and sometimes heterospecific sounds can also influence their vocal development. Here we show that heterospecific exposure can affect the development of secondary sexual traits of male zebra finches (Taeniopygia guttata). In a first experiment, we trained young males with a passive playback of domesticated canary (Serinus canaria) song. Song playback enhanced the sexual development of the birds: they started to sing during the presentation of a video clip of a female earlier during development and exhibited secondary sexual plumage ornaments faster than males of the control group kept in silence. Two out of five birds exhibited clear evidence of imitation of canary song. In a second experiment, we raised young male finches with young male canaries in pairs until adulthood. Again, the live contact with a heterospecific companion affected the development of plumage ornaments in finches. We also observed some evidences of vocal convergence, both for calls and song. Moreover, young males of both species could recognize the call of their heterospecific companion when adults. These results suggest that heterospecific exposure can affect both the sexual and the vocal development of the zebra finch and can have long lasting effects.
• [hal-01688811] THE GENETIC BASIS OF ZEBRA FINCH VOCALIZATIONS

  19 janvier 2018

  Animal vocalizations play an important role in individual recognition, kin recognition, species recognition, and sexual selection. Despite much work in these fields done on birds virtually nothing is known about the heritability of vocal traits in birds. Here, we study a captive population of more than 800 zebra finches (Taeniopygia guttata) with regard to the quantitative genetics of call and song characteristics. We find very high heritabilities in nonlearned female call traits and considerably lower heritabilities in male call and song traits, which are learned from a tutor and hence show much greater environmental variance than innate vocalizations. In both sexes, we found significant heritabilities in several traits such as mean frequency and measures of timbre, which reflect morphological characteristics of the vocal tract. These traits also showed significant genetic correlations with body size, as well as positive genetic correlations between the sexes, supporting a scenario of honest signaling of body size through genetic pleiotropy (" index signal "). In contrast to such morphology-related voice characteristics, classical song features such as repertoire size or song length showed very low heritabilities. Hence, these traits that are often suspected to be sexually selected would hardly respond to current directional selection.
• [hal-01478434] Variation in Reproductive Success Across Captive Populations: Methodological Differences, Potential Biases and Opportunities

  28 février 2017

  [...]
• [hal-01478442] The Perception of Self in Birds

  21 novembre 2017

  The perception of self is an important topic in several disciplines such as ethology, behavioral ecology, psychology, developmental and cognitive neuroscience. Self-perception is investigated by experimentally exposing different species of animals to self-stimuli such as their own image, smell or vocalizations. Here we review more than one hundred studies using these methods in birds, a taxonomic group that exhibits a rich diversity regarding ecology and behavior. Exposure to self-image is the main method for studying self-recognition, while exposing birds to their own smell is generally used for the investigation of homing or odor-based kin discrimination. Self-produced vocalizations – especially in oscine songbirds – are used as stimuli for understanding the mechanisms of vocal coding/decoding both at the neural and at the behavioral levels. With this review, we highlight the necessity to study the perception of self in animals cross-modally and to consider the role of experience and development, aspects that can be easily monitored in captive populations of birds.
• [hal-01478498] Melatonin Affects the Temporal Pattern of Vocal Signatures in Birds

  22 novembre 2017

  In humans and other animals, melatonin is involved in the control of circadian biological rhythms. Here, we show that melatonin affects the temporal pattern of behavioral sequences in a noncircadian manner. The zebra finch (Taeniopygia guttata) song and the crow of the Japanese quail (Coturnix japonica) are courtship vocalizations composed of a stereotyped sequence of syllables. The zebra finch song is learned from conspecifics during infancy, whereas the Japanese quail crow develops normally without auditory input. We recorded and analyzed the complete vocal activity of adult birds of both species kept in social isolation for several weeks. In both species, we observed a shortening of signal duration following the transfer from a light-dark (LD) cycle to constant light (LL), a condition known to abolish melatonin production and to disrupt circadian rhythmicity. This effect was reversible because signal duration increased when the photoperiod was returned to the previous LD schedule. We then tested whether this effect was directly related to melatonin by removal of the pineal gland, which is the main production site of circulating melatonin. A shortening of the song duration was observed following pinealectomy in LD. Likewise, melatonin treatment induced changes in the temporal structure of the song. In a song learning experiment, young pinealectomized finches and young finches raised in LL failed to copy the temporal pattern of their tutor's song. Taken together, these results suggest that melatonin is involved in the control of motor timing of noncircadian behavioral sequences through an evolutionary conserved neuroendocrine pathway.
• [hal-01478479] Comparisons of Different Methods to Train a Young Zebra Finch (Taeniopygia Guttata) to Learn a Song

  21 novembre 2017

  Like humans, oscine songbirds exhibit vocal learning. They learn their song by imitating conspecifics, mainly adults. Among them, the zebra finch (Taeniopygia guttata) has been widely used as a model species to study the behavioral, cellular and molecular substrates of vocal learning. Various methods using taped song playback have been used in the laboratory to train young male finches to learn a song. Since different protocols have been applied by different research groups, the efficiency of the studies cannot be directly compared. The purpose of our study was to address this problem. Young finches were raised by their mother alone from day post hatching (dph) 10 and singly isolated from dph 35. One week later, exposure to a song model began, either using a live tutor or taped playback (passive or self-elicited). At dph 100, the birds were transferred to a common aviary. We observed that one-to-one live tutoring is the best method to get a fairly complete imitation. Using self-elicited playback we observed high inter-individual variability; while some finches learned well (including good copying of the song model), others exhibited poor copying. Passive playback resulted in poor imitation of the model. We also observed that finches exhibited vocal changes after dph 100 and that the range of these changes was negatively related to their imitation of the song model. Taken together, these results suggest that social aspects are predominant in the success outcome of song learning in the zebra finch.
• [hal-03241871] Traffic noise disrupts vocal development and suppresses immune function

  29 mai 2021

  Noise pollution has been linked to learning and language deficits in children, but the causal mechanisms connecting noise to cognitive deficiencies remain unclear because experimental models are lacking. Here, we investigated the effects of noise on birdsong learning, the primary animal model for vocal learning and speech development in humans. We found that traffic noise exposure retarded vocal development and led to learning inaccuracies. In addition, noise suppressed immune function during the sensitive learning period, indicating that it is a potent stressor for birds, which is likely to compromise their cognitive functions. Our results provide important insights into the consequences of noise pollution and pave the way for future studies using birdsong as an experimental model for the investigation of noise-induced learning impairments.
• [hal-01478480] Horizontal Transmission of the Father's Song in the Zebra Finch (Taeniopygia Guttata)

  21 novembre 2017

  As is the case for human speech, birdsong is transmitted across generations by imitative learning. Although transfer of song patterns from adults to juveniles typically occurs via vertical or oblique transmission, there is also evidence of horizontal transmission between juveniles of the same generation. Here, we show that a young male zebra finch (Taeniopygia guttata) that has been exposed to its father during the sensitive period for song learning can lead a brother, that has never heard the paternal song, to imitate some sounds of the father. Moreover, song similarity between the two brothers was higher than the similarity measured between the paternal song and the song of the brother that had a week-long exposure to the father. We speculate that the phenomenon of within-generation song learning among juveniles may be more widespread than previously thought and that when a juvenile evaluates potential models for imitative learning, a sibling may be as salient as an adult.
• [hal-02014219] Consistency of female preference for male song in the domestic canary using two measures: Operant conditioning and vocal response

  11 février 2019

  Variation of female preferences is often reported in the literature and could be related to an artefact derived from multiple different methods used. Thus, there is a need to evaluate the influence of different methods when assessing female preferences. The present study aims to compare female preferences obtained from an operant conditioning test and from female vocal responses to male song in the domestic canary (Serinus canaria). In an operant conditioning test, females had the possibility to choose between two keys; a peck on one key elicited a supposed very attractive canary song while a peck on the other key elicited a less attractive song. Meanwhile, female vocal responses were recorded. Our results revealed that female canaries preferred to peck on the key eliciting the attractive song and that they emitted more copulation calls in response to the attractive song compared to the less attractive song. This study shows the congruence of these two methods and further suggests that they are reliable to study female preferences in laboratory conditions.
• [hal-01688801] Birdsong learning in the laboratory, with especial reference to the song of the Zebra Finch (Taeniopygia guttata)

  19 janvier 2018

  Vocal imitation in songbirds exhibits interesting parallels to infant speech development and is currently the model system of choice for exploring the behavioural, molecular and electrophysiological substrates of vocal learning. Among songbirds, the Zebra Finch (Taeniopygia guttata) is currently used as the ‘flying mouse’ of birdsong research. Only males sing and they develop their song primarily during a short sensitive period in early life. They learn their speciesspecific song patterns by memorizing and imitating the songs of conspecifics, mainly adults. Since Immelmann's pioneering work, thousands of zebra finches have been raised in strictly controlled auditory environments to examine how their experience affected their songs. In this article, I review the different experimental procedures that have been used in the laboratory to study the social influences on song learning in the Zebra Finch. Poor song learning was observed using passive playback of taped songs, whereas self-eliciting exposure using operant tutoring techniques induced significant learning, but with a high interindividual variability. The success of the training paradigm is often measured by the quality of imitation of the songs to which the young bird is exposed. Using empirical evidence from the field and the laboratory, I will also discuss this issue, by summarizing possible advantages and disadvantages of producing a perfect imitation. So far, the best method to get a close copy of a song model in the Zebra Finch is to place a single young bird with an adult male. This situation, which is rather unnatural, does not meet the criteria for precise control necessary in experimental conditions. Optimizing the methods used to train a zebra finch to learn a song, in order to be able to predict the imitation success, will improve our understanding of the dynamics of vocal production learning. It would also consolidate this species as a research model of relevance to human speech development and disorders
• [hal-01643606] Representation of Early Sensory Experience in the Adult Auditory Midbrain: Implications for Vocal Learning

  21 novembre 2017

  Vocal learning in songbirds and humans occurs by imitation of adult vocalizations. In both groups, vocal learning includes a perceptual phase during which juveniles birds and infants memorize adult vocalizations. Despite intensive research, the neural mechanisms supporting this auditory memory are still poorly understood. The present functional MRI study demonstrates that in adult zebra finches, the right auditory midbrain nucleus responds selectively to the copied vocalizations. The selective signal is distinct from selectivity for the bird's own song and does not simply reflect acoustic differences between the stimuli. Furthermore, the amplitude of the selective signal is positively correlated with the strength of vocal learning, measured by the amount of song that experimental birds copied from the adult model. These results indicate that early sensory experience can generate a long-lasting memory trace in the auditory midbrain of songbirds that may support song learning.
• [hal-04462688] Foreign-local microdialect discrimination in a songbird, the black redstart

  16 février 2024

  Dialects have been described as geographical variations of vocal signals in several taxa such as humans, cetaceans, bats and birds. Many playback studies have focused on dialect perception by territorial birds, mainly reporting a stronger aggressiveness towards local dialects in comparison to foreign ones. However, exploration of the influence of several methodological factors is lacking, and very few studies have focused on species displaying microdialects (covering distances under 2 km). We investigated these issues in a migratory population of a territorial songbird, the black redstart, Phoenicurus ochruros. In this species only males sing to defend their territories, and their distribution leads to several small groups of neighbours with a relatively high level of song sharing within each group. Using a playback experiment, we tested whether males were able to discriminate between the local and a foreign microdialect, while testing for the effects of their age class, the initial distance to the speaker, the relative acoustic similarity between the playback songs and songs of the tested birds and the order of the stimuli. We broadcast two acoustic stimuli (foreign and local microdialect) from unfamiliar individuals to 26 territorial males, during two breeding seasons. In line with our predictions, males showed a stronger response towards the local microdialect, spending more time in proximity to the speaker, in agreement with the escalation chain of aggression. Our results conformed to the previously reported trend in wide-spanning dialect species. We also showed that both the vocal response and the approach behaviours were influenced by the distance of tested males from the speaker at the beginning of the experiment. Males that were further from the sound source tended to sing rather than approach. More studies are needed to get a better understanding of discrimination abilities and their functions in microdialect species.
• [hal-01681237] Tool selection during foraging in two species of funnel ants

  29 décembre 2023

  [...]
• [hal-04329040] Consistency of female preference for male song in the domestic canary using two measures: Operant conditioning and vocal response

  7 décembre 2023

  [...]
• [hal-05363829] Lifetime evolution of vocal repertoires in a songbird, the black redstart: a longitudinal field approach

  13 novembre 2025

  Oscine songbirds learn to sing mainly by imitating conspecific adults. Song learning programs are diverse, ranging from species that can only learn during the first months of life to species that are able to learn new songs throughout their lives. There is a paucity of longitudinal studies in the field on this matter. We investigated the changes of male strophe repertoires and strophe sharing over the lifetime, in a migratory population of a territorial songbird, the black redstart, Phoenicurus ochruros, by recording colour-ringed individuals during eight consecutive breeding seasons (2015–2022). We previously described the existence of microdialects between the different territorial male clusters (2–8 individuals breed in scattered patches of buildings). Three sets of time points were used to establish the time frame and to identify the types of changes males used to modify their repertoires. Males were recorded at their arrival from migration for their first breeding season (N = 52). We also followed 40 individuals during extended periods, most often covering their whole life: 25 were recorded on multiple occasions during their first breeding season and 24 were recorded during at least two breeding seasons. Most males kept their strophe repertoires stable throughout their lifetime (2–8 years). Those who shared only a few or no strophes with their neighbours when they first established their territories (14/40) changed their repertoires through: (1) addition of shared strophes, (2) selective attrition of unshared strophes and (3) gradual modification of syllables. All the repertoire changes resulted in an increase in song sharing with neighbours. Thus, black redstarts adapt their songs to their social environment mostly during the first breeding season but also throughout their lifetime. Our results support a continuum view of song plasticity and emphasize the necessity of long-term studies in order to understand the variability of song-learning processes.
• [hal-00186958] Female canaries produce eggs with greater amounts of testosterone when exposed to preferred male song

  13 novembre 2007

  Male birdsong has a great influence in the stimulation of female reproduction. However, female physiological responsiveness to song may depend on the degree of complexity of male song. This is expected because females of iteroparous organisms may increase their fitness by matching their reproductive investment to the predicted value of each reproductive attempt. To the extent that the expression of male ornaments is a signal of male quality, we expect females to increase their investment when paired to highly ornamented males. However, female investment may be cryptic and difficult to detect, such as androgen content in the eggs. In this study, we exposed female canaries (Serinus canaria) to attractive and unattractive song repertoires using a crossover design. As predicted, females invested greater concentrations of testosterone in their eggs when exposed to attractive repertoires than when exposed to unattractive repertoires. This implies that song repertoires convey important information about the reproductive value of a given male and suggests that testosterone deposition in egg yolk may be costly.
• [hal-01478471] A Potential Role for Parasites in the Maintenance of Color Polymorphism in Urban Birds

  28 février 2017

  Urbanization is a major challenge for biodiversity conservation, yet the evolutionary processes taking place in urbanized areas remain poorly known. Human activities in cities set new selective forces in motion which need to be investigated to predict the evolutionary responses of animal species living in urban areas. In this study, we investigated the role of urbanization and parasites in the maintenance of melanin-based color polymorphism in the feral pigeon Columba livia. Using a correlative approach, we tested whether differently colored genotypes displayed alternative phenotypic responses to urbanization, by comparing body condition, blood parasite prevalence and parasite load between colored morphs along an urbanization gradient. Body condition did not vary with urbanization, but paler individuals had a higher body condition than darker individuals. Moreover, paler morphs were less often parasitized than darker morphs in moderately urbanized habitats, but their parasite prevalence increased with urbanization. In contrast, darker morphs had similar parasite prevalence along the urbanization gradient. This suggests that paler morphs did better than darker morphs in moderately urbanized environments but were negatively affected by increasing urbanization, while darker morphs performed equally in all environments. Thus, differently colored individuals were distributed non-randomly across the urban habitat and suffered different parasite risk according to their location (a gene-by-environment interaction). This suggests that melanin-based coloration might reflect alternative strategies to cope with urbanization via different exposure or susceptibility to parasites. Spatial variability of parasite pressures linked with urbanization may, thus, play a central role in the maintenance of plumage color polymorphism in this urban species.
• [hal-05240651] Association Between Parental Social Position and Childhood Overweight: Mediation by Lifestyle and BMI Patterns During Pregnancy

  4 septembre 2025

  In high-income countries, children born to parents with low socio-economic position (SEP) or with non-Western ethnicity are disproportionally affected by obesity as early as preschool age. We assessed how much of these associations were mediated by parental lifestyle and BMI patterns during pregnancy. We characterised 5-6 years old children with or without overweight from the French Etude Longitudinale Française depuis l'Enfance (ELFE) (n = 8584) and the Dutch Generation R birth cohorts (n = 6511). We used counterfactual mediation analyses to assess the potential mediating effect of previously identified lifestyle patterns: "high parental smoking, poor-quality maternal diet and sedentary behaviour" and "high parental body mass index and low gestational weight gain". Both patterns jointly mediated 62.8% of the association between parents' education level and childhood overweight in ELFE and 23.2% in Generation R. In Generation R, they jointly mediated 8.9% of the association between parents' geographic origin and childhood overweight. In ELFE, parents with non-Western backgrounds were less likely to follow the first pattern, resulting in a negative indirect effect. Parental lifestyle and BMI patterns during pregnancy seem key contributors to the early development of socio-economic inequalities in childhood overweight, while other yet unidentified factors may contribute to inequalities related to geographic origin. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
• [hal-04498355] Social patterning of childhood overweight in the French national ELFE cohort

  11 mars 2024

  Abstract An inverse social gradient in early childhood overweight has been consistently described in high-income countries; however, less is known about the role of migration status. We studied the social patterning of overweight in preschool children according to the mother’s socio-economic and migration background. For 9250 children of the French ELFE birth cohort with body mass index collected at age 3.5 years, we used nested logistic regression to investigate the association of overweight status in children with maternal educational level, occupation, household income and migration status. Overall, 8.3% (95%CI [7.7–9.0]) of children were classified as overweight. The odds of overweight was increased for children from immigrant mothers (OR 2.22 [95% CI 1.75–2.78]) and descendants of immigrant mothers (OR 1.35 [1.04–2.78]) versus non-immigrant mothers. The highest odds of overweight was also observed in children whose mothers had low education, were unemployed or students, or were from households in the lowest income quintile. Our findings confirm that socio-economic disadvantage and migration status are risk factors for childhood overweight. However, the social patterning of overweight did not apply uniformly to all variables. These new and comprehensive insights should inform future public health interventions aimed at tackling social inequalities in childhood overweight.
• [hal-05728521] Moderating effect of attachment to parents on the association between bullying and self‐esteem among early adolescents aged 10 to 12

  27 août 2026

  Abstract The aim of this study was to examine whether attachment to each parent moderates the relationship between bullying victimisation and self‐esteem. The sample consisted of 250 junior high school students (114 males, 136 females; mean age: 11.3 years). The administered scales were the Bully/Victim Questionnaire Revised, the Inventory of Parent and Peer Attachment for Children and the Rosenberg Self‐Esteem Scale. Results showed that early adolescents subjected to bullying had lower self‐esteem than non‐bullied peers. For girls, attachment to mother also accounted for self‐esteem over and above the effect of bullying. For boys, attachment with the father appeared as a pure moderator of the effect of bullying as the association with self‐esteem was non‐significant when attachment scores were high. The findings suggest that attachment to same sex parents may foster better self‐esteem in the face of bullying. Parents' participation in preventive measures could be encouraged.
• [hal-01244841] Sex Differences in Language Across Early Childhood: Family Socioeconomic Status does not Impact Boys and Girls Equally

  17 décembre 2015

  Child sex and family socioeconomic status (SES) have been repeatedly identified as a source of inter-individual variation in language development; yet their interactions have rarely been explored. While sex differences are the focus of a renewed interest concerning emerging language skills, data remain scarce and are not consistent across preschool years. The questions of whether family SES impacts boys and girls equally, as well as of the consistency of these differences throughout early childhood, remain open. We evaluated consistency of sex differences across SES and age by focusing on how children (N = 262), from 2;6 to 6;4 years old, from two contrasting social backgrounds, acquire a frequent phonological alternation in French – the liaison. By using a picture naming task eliciting the production of obligatory liaisons, we found evidence of sex differences over the preschool years in low-SES children, but not between high-SES boys and girls whose performances were very similar. Low-SES boys' performances were the poorest whereas low-SES girls' performances were intermediate, that is, lower than those of high-SES children of both sexes but higher than those of low-SES boys. Although all children's mastery of obligatory liaisons progressed with age, our findings showed a significant impeding effect of low-SES, especially for boys.
• [hal-04531882] Grandmothering and cognitive resources are required for the emergence of menopause and extensive post-reproductive lifespan

  4 avril 2024

  Menopause, the permanent cessation of ovulation, occurs in humans well before the end of the expected lifespan, leading to an extensive post-reproductive period which remains a puzzle for evolutionary biologists. All human populations display this particularity; thus, it is difficult to empirically evaluate the conditions for its emergence. In this study, we used artificial neural networks to model the emergence and evolution of allocation decisions related to reproduction in simulated populations. When allocation decisions were allowed to freely evolve, both menopause and extensive post-reproductive life-span emerged under some ecological conditions. This result allowed us to test various hypotheses about the required conditions for the emergence of menopause and extensive post-reproductive life-span. Our findings did not support the Maternal Hypothesis (menopause has evolved to avoid the risk of dying in childbirth, which is higher in older women). In contrast, results supported a shared prediction from the Grandmother Hypothesis and the Embodied Capital Model. Indeed, we found that extensive post-reproductive lifespan allows resource reallocation to increase fertility of the children and survival of the grandchildren. Furthermore, neural capital development and the skill intensiveness of the foraging niche, rather than strength, played a major role in shaping the age profile of somatic and cognitive senescence in our simulated populations. This result supports the Embodied Capital Model rather than the Grand-Mother Hypothesis. Finally, in simulated populations where menopause had already evolved, we found that reduced post-reproductive lifespan lead to reduced children's fertility and grandchildren's survival. The results are discussed in the context of the evolutionary emergence of menopause and extensive post-reproductive life-span.
• [hal-01478438] You Know What? I'm Happy. Cognitive Bias Is Not Related to Personality but Is Induced by Pair-Housing in Canaries (Serinus Canaria)

  28 février 2017

  Recent studies suggest that cognitive bias could constitute a novel and valid measure of animal welfare. Although interest for a link between personality and cognition is growing, no study to date investigated whether a cognitive bias might be related to the personality of the individuals. We trained 43 domestic canaries (Serinus canaria) to discriminate between two sides of a test cage, each side being associated with a different value (attractive or aversive food in a dish). During the test phase, the dish was placed at intermediate locations, representing ambiguous information. Results show evidence of an "optimistic" bias (flying faster to the dish at the ambiguous location) in birds housed in pairs, compared to birds housed singly, suggesting an influence of social context (living conditions) on canaries' emotions when tested individually. We also studied six traits of individuals' personality and found that aggressiveness, neophobia, one sociability index and obstinacy were repeatable across social context and/or day-light schedule, whereas the other sociability index, boldness and locomotion were not. No correlation between the birds' optimism and any of their personality traits was found, suggesting that cognitive bias may be a matter of social context rather than of individual personality.
• [hal-01478435] Individual Differences in Exploratory Activity Relate to Cognitive Judgement Bias in Carpenter Ants

  28 février 2017

  Emotional state may influence cognitive processes such as attention and decision-making. A cognitive judgement bias is the propensity to anticipate either positive or negative consequences in response to ambiguous information. Recent work, mainly on vertebrates, showed that the response to ambiguous stimuli might change depending on an individual's affective state, which is influenced by e.g. the social and physical environment. However, the response to ambiguous stimuli could also be affected by the individual's behavioural type (personality), a question that has been under-investigated. We studied the link between individual differences in exploratory activity and the response to an ambiguous stimulus in the ant Camponotus aethiops. Exploratory behaviour, quantified with an open-field test, was variable among individuals but consistent over time within individuals. Individual ants learned to associate a spatial position to a reinforcement and another spatial position to a punishment. Once the ants had acquired this discrimination, cognitive judgement bias was tested with the stimulus in an intermediate position. Fast explorers in the open-field took significantly more time to approach the ambiguous stimulus compared to slow explorers, suggesting a negative judgement bias for fast explorers and a positive bias for slow explorers. This previously unknown link between individual difference in exploratory activity and cognitive bias in a social insect may help understanding the evolution and organization of social life.
• [hal-01429925] Newborns’ Sensitivity to the Visual Aspects of Infant-Directed Speech: Evidence From Point-Line Displays of Talking Faces

  9 janvier 2017

  The first time a newborn is held, he is attracted by the human’s face. A talking face is even more captivating, as it is the first time he or she hears and sees another human talking. Older infants are relatively good at detecting the relationship between images and sounds when someone is addressing to them, but it is unclear whether this ability is dependent on experience or not. Using an intermodal matching procedure, we presented newborns with 2 silent point-line displays representing the same face uttering different sentences while they were hearing a vocal-only utterance that matched 1 of the 2 stimuli. Nearly all of the newborns looked longer at the matching point-line face than at the mismatching 1, with prior exposure to the stimuli (Experiment 1) or without (Experiment 2). These results are interpreted in terms of newborns’ ability to extract common visual and auditory information of continuous speech events despite a short experience with talking faces. The implications are discussed in the light of the language processing and acquisition literature.
• [hal-01478441] Infants' Selectively Pay Attention to the Information They Receive from a Native Speaker of Their Language

  2 décembre 2024

  From the first moments of their life, infants show a preference for their native language, as well as toward speakers with whom they share the same language. This preference appears to have broad consequences in various domains later on, supporting group affiliations and collaborative actions in children. Here, we propose that infants' preference for native speakers of their language also serves a further purpose, specifically allowing them to efficiently acquire culture specific knowledge via social learning. By selectively attending to informants who are native speakers of their language and who probably also share the same cultural background with the infant, young learners can maximize the possibility to acquire cultural knowledge. To test whether infants would preferably attend the information they receive from a speaker of their native language, we familiarized 12-month-old infants with a native and a foreign speaker, and then presented them with movies where each of the speakers silently gazed toward unfamiliar objects. At test, infants' looking behavior to the two objects alone was measured. Results revealed that infants preferred to look longer at the object presented by the native speaker. Strikingly, the effect was replicated also with 5-month-old infants, indicating an early development of such preference. These findings provide evidence that young infants pay more attention to the information presented by a person with whom they share the same language. This selectivity can serve as a basis for efficient social learning by influencing how infants' allocate attention between potential sources of information in their environment.
• [hal-01478477] Sclérose en plaques (SEP) et dépression : la voix à suivre ?

  28 février 2017

  à venir
• [hal-05794078] Focus méthodologique : les rythmicités individuelles comme soutien à la mobilisation attentionnelle, cognitive et sociale chez les enfants autistes.

  12 octobre 2026

  À la lumière des travaux sur le développement de l’enfant, l’auteure nous propose ici une approche innovante des spécificités rythmiques des enfants présentant un trouble du spectre de l’autisme. Et si le respect de leurs temporalités propres favorisait l’attention et les interactions sociales ? C’est la question qu’explore l’étude MobiRythm, à partir de ce qui est observé chez les enfants neurotypiques.
• [hal-05568101] Development of Dating Motivations During High School: Contributions of Romantic Experiences

  26 mars 2026

  Objective - Adolescent dating motivations are often considered a key issue in understanding dating and sexual behaviors. Despite their initial identification, the development of these motivations and their correlates remains understudied. The present study aimed to investigate the development of dating motivations over a 3-year period using a longitudinal design, and to explore the moderating roles of romantic experiences and current dating status. Method - French late adolescents (N = 493; 61% girls) completed a questionnaire six times over 3 years. Rooted in self-determination theory, the questionnaire assessed their amotivation for dating, intrinsic motivation (intimacy and companionship), identified regulation (pleasure and dating timetable), and external motivation (peer pressure), as well as their romantic experiences and current dating status. Results - As expected, growth models revealed an increase in identified regulation and intrinsic motivation, and a decrease in amotivation, and external motivation between the beginning and end of high school. Gender differences emerged in the developmental trajectories of these motivations: girls showed a more rapid decline in amotivation and a steeper increase in identified regulation than boys. Furthermore, the gender gap in intrinsic motivation increased across the six waves. Conclusions - Overall, the findings support the view that adolescents progressively shift toward more self-determined motivations with age-a process that appears to occur earlier in girls than in boys. Romantic experiences and current dating status hindered the decrease in amotivation and made only a small contribution to the development of other forms of regulation. Practical implications of the development of dating motivation and gender differences are discussed.
• [hal-02450781] Sensus Communis: Some Perspectives on the Origins of Non-synchronous Cross-Sensory Associations

  2 décembre 2024

  [...]
• [hal-05335666] First 1000 Days Strategies to Prevent Childhood Obesity: A Narrative Review and Recommendations From the EndObesity Consortium

  28 octobre 2025

  Childhood obesity remains a major global public health challenge, leading to significant short‐ and long‐term adverse health outcomes and imposing substantial societal costs. Recognising the critical importance of early intervention, the Horizon2020 EU‐funded JPI Consortium EndObesity has prioritised the first 1000 days of life, from preconception to 2 years of age, as a key window for obesity prevention strategies. This narrative review synthesises findings from the EndObesity Consortium, summarising evidence from large multi‐cohort studies on the influence of family‐based health behaviours in the first 1000 days on offspring obesity risk, the potential of childhood obesity prediction models in the first 1000 days, and strategies to enhance prenatal and postnatal interventions to prevent childhood obesity development. Finally, we present recommendations for research, practice, and policy to address the complex, multifaceted challenges of childhood obesity prevention in the first 1000 days.
• [hal-02474536] Maternal presence influences vocal development in the Japanese quail ( Coturnix c. japonica )

  19 octobre 2020

  Social influences on vocal development of young birds have been widely studied in oscine songbirds who learn to sing by vocal imitation of conspecifics, mainly male adults. In contrast, vocal development of non-vocal learners such as Galliformes is considered as being under strong genetic influence and independent of the social environment. In this study, we investigated the role of the mother on the vocal development of young Japanese quail (Coturnix coturnix japonica). We compared the vocal development of mothered and non-mothered chicks during the first 21 days of life. We analysed the structural changes of two vocalisations: a) the rally call, emitted during long-distance communication and in stressful situations, b) the contact call, emitted during short-distance communication when chicks are in visual and/or auditory contact with congeners. We showed that temporal and spectral structures of the two types of calls changed during development and differed between mothered and nonmothered chicks. These results demonstrate that maternal presence influences the vocal development of the young in the Japanese quail. Even if the adaptive value of such changes was not assessed, these results highlight that plasticity of vocalisations in species considered as non-vocal learners has been underestimated.
• [hal-01478449] Female Signalling to Male Song in the Domestic Canary, Serinus Canaria

  28 février 2017

  Most studies on sexual selection focus on male characteristics such as male song in songbirds. Yet female vocalizations in songbirds are growing in interest among behavioural and evolutionary biologists because these vocalizations can reveal the female's preferences for male traits and may affect male display. This study was designed to test whether male song performance influences the different female signals in the domestic canary (Serinus canaria). Female canaries were exposed to three types of song performance, differing in the repetition rate of sexy syllables. This experiment demonstrates that female birds are engaged in multimodal communication during sexual interaction. The results support the copulation solicitation hypothesis for female-specific trills: these trills were positively correlated and had a similar pattern to the copulation solicitation displays; responses were higher to the songs with higher performance and responses decreased with the repetition of the stimulation. Also, we observed a sensitization effect with the repetition of the song of the highest performance for the simple calls. Simple trills and other calls were more frequent during the broadcast of canary songs compared with the heterospecific control songs. The differential use of female signals in response to different song performance reveals a highly differentiated female signalling system which is discussed in light of the role of female traits to understand sexual selection in a broader perspective.
• [hal-02929991] Shared calls in repertoires of two locally distant gray parrots (Psittacus erithacus)

  9 novembre 2020

  Parrots belong to the handful of animal species capable of vocal production learning. They are considered to be open-ended learners with complex and variable vocalizations. It is not known, however, to what extent their repertoires are shared among individuals within a group or between vocally isolated individuals or groups. In study 1, we mapped the repertoire of four captive African gray parrots (Psittacus erithacus) using a combination of three acoustic analyses. In study 2, we compared the repertoire of two female African gray parrots from two different laboratories who had never been in vocal contact with each other or any member of the other parrot’s social group. Results of study 1 showed a relatively large agreement between all three methods used to analyze the vocalizations. Almost three quarters (72.8%) of categories determined by visual-acoustic analysis were confirmed by at least one of the two computer-aided methods used, i.e., by spectrographic cross-correlation and/or a multiparametric statistical method. In study 2, we found a relatively large proportion of calls shared between the repertoires of the two gray parrot subjects. Over half and over a fourth of calls produced by parrots with the smaller and the larger repertoire, respectively, were shared between the two. No previous study identified such a large proportion of intergroup shared calls within this parrot species. It seems that some calls tend to reappear in vocally isolated groups based on inherited predispositions, similarly as has been documented in songbirds.
• [hal-03177576] Auditory perception of self and others in zebra finches: evidence from an operant discrimination task

  3 juillet 2025

  Vocal communication is essential for social interactions in many animal species. For this purpose, an animal has to perceive vocal signals of conspecifics and is often also required to discriminate conspecifics. The capacity to discriminate conspecifics is particularly important in social species in which individuals interact repeatedly. In addition, auditory perception of self plays an important role for vocal learners. A vocal learner has to memorise vocalisations of conspecifics and to subsequently modify its own vocalisations in order to match the memorised vocalisations. Here, we investigated auditory perception of self and others in zebra finches (Taeniopygia guttata), a highly gregarious songbird species and vocal learner. We used laboratory colonies in which founder males had been previously trained to produce the same song type. This resulted in artificial dialects in the song of founders and their offspring. We investigated whether those birds would be able to discriminate between familiar and unfamiliar conspecifics based on song. Furthermore, we examined whether they would classify their own song as familiar or unfamiliar. We found that birds were able to discriminate between songs of familiar versus unfamiliar conspecifics, despite the fact that all songs were imitations of the same song type. This suggests that such discrimination is possible even based on songs with a high acoustic similarity. None of the subjects classified their own song as unfamiliar. Three out of eight males classified their own song as familiar. Thus zebra finches might recognise their own song. Further experiments are needed to confirm such self-recognition.
• [hal-04355854] Vocal performance during spontaneous song is equal in male and female European robins

  20 décembre 2023

  [...]
• [hal-01478488] De la notion de genre appliquée au monde animal

  4 décembre 2017

  La vie sociale des animaux est constituée de coopérations et de conflits d’intérêt où le sexe des individus joue un rôle primordial. Cependant, la distinction entre mâles et femelles ne permet pas à elle seule de cerner la répartition des différents rôles sociaux au sein d’une espèce. C’est en tout cas ce que mettent en évidence les recherches portant sur l’activité parentale, le statut hiérarchique, l’orientation sexuelle ou encore les choix de partenaires. Or nul n’ignore que, chez l’humain, ces questions relèvent d’études dites « sur le genre ». Aussi ne paraît-il pas illégitime de poser que les mêmes propriétés étudiées chez l’animal relèvent elles aussi de cette notion. Quant à nous, nous ne doutons pas de la valeur opératoire de cette extension au monde animal d’un concept issu des sciences sociales et humaines.
• [hal-04681106] Outil numérique innovant à destination des jeunes S/sourds et des jeunes malentendants (ONISE) : un questionnaire en ligne sur leur épanouissement relationnel

  13 septembre 2024

  L’objectif de cette étude transversale est d’investiguer l’épanouissement relationnel de jeunes S/sourds et de jeunes malentendants français au sortir de l’adolescence. Compte tenu de l’inexistence d’un outil adapté et accessible pour recueillir l’avis de ces jeunes, le préalable à cet objectif a été la construction d’un auto-questionnaire en ligne, élaboré dans le cadre d’un appel à projet. Pour le recueil des données, nous avons eu recours au questionnaire en ligne, à des observations participantes en établissements pour les S/sourds, de même qu’à des focus groupes de jeunes sourds et de jeunes malentendants dans ces établissements. Les résultats obtenus sur 40 jeunes, âgés de 18 à 25 ans, montrent que leur épanouissement relationnel en termes de qualité de vie, de participation sociale et d’humeur dépressive n’est pas très éloigné de l’épanouissement relationnel d’autres jeunes S/sourds d’origine différente ou de jeunes français entendants. L’accessibilité de l’outil est globalement satisfaisante même si les observations et les analyses des échanges issus des focus groupes mettent en évidence des difficultés d’accès à certaines questions.
• [hal-02326879] Developmental learning of tool use in human and animal babies: inherited, social and environmental influences.

  22 octobre 2019

  Flexible tool use is an advanced skill present in both humans and several non-human animals such as some primate and bird species, but very little is known about how it develops in these disparate organisms. Each system needs to develop this competence by a combination of heritable or pre-designed traits that do not only depend on experience, and abilities that advance as a function of learning and experience. Over the last decade, a few developmental studies have started addressing this issue, both in human infants and infants of non-human species. Here, I review the available data from both the developmental literature and some of my own work that address the inherited, experience-based and social factors influencing the emergence of tool use in several species. I further suggest experimental methods and perspectives that may serve as a basis for future research.
• [hal-05705770] Caring About Dogs, Filming Dogs, Watching Dogs: How Far Does the Human–Dog Relationship Travel Through Cultural Production? A Case Study of Good Boy (2025)

  28 juillet 2026

  Western societies increasingly treat dogs as sentient family members, but does this reshape cultural production, and can cultural production, in turn, reshape the relationship? We traced this circuit through Good Boy (2025), a horror film with a real, untrained dog as the sole protagonist, combining filmmaker interviews, behavioral coding of eleven sequences (21-behavior repertoire, permutation tests), and thematic analysis of 242 reviews on the Letterboxd website. The filmmaker restructured the production around his dog’s welfare, yet signs of stress persisted. The film’s canine perspective generated formal innovation but remained confined to human perception. Audiences showed concern for the real dog but read his discomfort as devotion—no review mentioned any behavioral indicator of stress. Good Boy reveals not the failure of a single film but the current state of a cultural transition—a society that has moved beyond treating dogs as props yet lacks the tools to act on its own values. Addressing this gap will require welfare monitoring during production, representation that goes beyond human perception, and public literacy in canine body language.
• [hal-01699823] Pet-directed speech draws adult dogs’ attention more efficiently than Adult-directed speech

  2 février 2018

  Humans speak to dogs using a special speech register called Pet-Directed Speech (PDS) which is very similar to Infant-Directed Speech (IDS) used by parents when talking to young infants. These two type of speech share prosodic features that are distinct from the typical Adult-Directed Speech (ADS): a high pitched voice and an increased pitch variation. So far, only one study has investigated the effect of PDS on dogs' attention. We video recorded 44 adult pet dogs and 19 puppies when listening to the same phrase enounced either in ADS or in PDS or in IDS. The phrases were previously recorded and were broadcasted via a loudspeaker placed in front of the dog. The total gaze duration of the dogs toward the loudspeaker, was used as a proxy of attention. Results show that adult dogs are significantly more attentive to PDS than to ADS and that their attention significantly increases along with the rise of the fundamental frequency of human' speech. It is likely that the exaggerated prosody of PDS is used by owners as an ostensive cue for dogs that facilitates the effectiveness of their communication, and should represent an evolutionarily determined adaptation that benefits the regulation and maintenance of their relationships. Humans speak to dogs using a special speech register called pet-directed speech (PDS) 1–4 , which is very similar to infant-directed speech (IDS) used by parents when talking to young infants. These two types of speech share prosodic and syntactic features that are distinct from the typical adult-directed speech (ADS): a high pitched voice, an increased pitch variation, short utterances, a reduced syntactic and semantic complexity, and word repetitions 1–5. PDS and IDS are also commonly described as 'happy voices' , in comparison to ADS presenting a relatively inhibited emotional content 6. Both speeches have been shown to vary according to the interaction context 7–9 , for instance PDS' prosodic features are enhanced in a positive reunion situation 9. Several studies suggest that IDS is used by humans in order to modulate infants' attention and state of arousal and to communicate their positive affect and intentions in a non-verbal way 10–14. IDS may also facilitate the emergence of language in infants by emphasizing the linguistic structure 15, 16 , for instance by using hyperaticulation of vowels 2, 3, 17 , or words repetition 18. Authors highlighted these functions in studying babies' preference for IDS toward ADS 19, 20 : infants have a longer fixation on, or turn more often the head toward visual targets that produced IDS 19. Infants also better remember and look longer at adults who have addressed them with IDS 20 , and this preference is present when IDS is produced by the infants' own mother as well as by an unfamiliar mother 12, 20. In addition, the exaggerated acoustic features of IDS elicit increased neural activity in infants, related to atten-tional processing 21. Infants also present increased social and affective responsiveness while listening to IDS compared to ADS 19. PDS and IDS may be similar because both infants and dogs are non-verbal listeners and because the affective bond between owners and dogs mirrors the human parents-infant bond. Indeed, both owners and dogs experience an important secretion of oxytocin after a brief period of cuddling 22 and a study highlighted common brain activation when mothers viewed images of both their child and dog 23. In the context of human-dog communication, there is evidence that dogs present an increased neuronal activity in the auditory cortex when listening to vocalizations with positive emotional valence compared to negative or neutral emotional valence 24. Moreover, after a greeting involving eye contact and a high pitched voice, dogs are more likely to follow the humans gaze, similarly to young children do 25, 26. Similarly, dogs are more motivated to answer a command to find hidden food in high-pitched informative than in low-pitched imperative trials 27 , suggesting that they are sensitive to the nonverbal quality of human vocal signals.
• [hal-03919211] Premises of social cognition: Newborns are sensitive to a direct versus a faraway gaze

  2 janvier 2023

  Previous studies evidenced that already from birth, newborns can perceive differences between a direct versus an averted gaze in faces both presented in static and interactive situations. It has been hypothesized that this early sensitivity would rely on modifications of the location of the iris (i.e. the darker part of the eye) in the sclera (i.e. the white part), or that it would be an outcome of newborns’ preference for configurations of faces with the eye region being more contrasted. One question still remains: What happens when the position of the iris is not modified in the sclera, but the look is ‘faraway’, that is when the gaze is toward the newborns’ face but above his or her own eyes? In the present study, we tested the influence of a direct versus a faraway gaze (i.e., two gazes that only differed slightly in the position of the iris on the vertical axis and not on the horizontal axis) on newborns’ face recognition. The procedure was identical to that used in previous studies: using a familiarization-test procedure, we familiarized two groups of newborns (N = 32) with videos of different talking faces that were presented with either a direct or a faraway gaze. Newborns were then tested with photographs of the face seen previously and of a new one. Results evidenced that newborns looked longer at the familiar face, but only in the direct gaze condition. These results suggest that, already from birth, infants can perceive slight differences of gazes when someone is addressing to them.
• [hal-05528308] Comparison of the frailty phenotype and frailty index for identifying vulnerable companion dogs

  29 avril 2026

  [...]
• [hal-03919241] Binocular non-stereoscopic cues can deceive clinical tests of stereopsis

  2 janvier 2023

  Stereoscopic vision plays a critical role in visual perception; however, it is difficult to assess. In clinical settings, stereoacuity is assessed with clinical stereotests. Observers can use monocular cues to deceive some of the most common stereotests, such as the Titmus test. The Randot test has been found free of monocular cues, and here we confirm that result by testing observers under monocular viewing. However, there is a common misconception that only monocular cues can be used to deceive stereotests. Here we demonstrate that binocular non-stereoscopic cues can also be used to pass the Randot, by testing participants with the test rotated, a condition that abolishes stereopsis, and comparing the performance to a monocular viewing condition. We also assessed the Random Dot Butterfly test and discovered considerable amounts of non-stereoscopic cues, including binocular cues in the Circles that can be used to deceive the test. Participants with amblyopia had more difficulty using non-stereoscopic cues than neurotypical observers. We gathered normal-viewing Randot stereoacuities for 110 participants (90 neurotypical and 20 with amblyopia) and compared them to psychophysical stereoacuities (our gold standard). The Randot test showed low positive normalized predictive values for detecting stereoblindness. It could perfectly detect stereo-impairment but with a low sensitivity.

ACTUALITES

2026/05 - Maya Gratier intervient dans un documentaire brésilien.
2023/06/30 - Articles de Johana Ryšavá

• Infants can distinguish between sounds of different bird species, as discovered at the University of Nanterre
• Why should we fight for the education of our children?

2022/04/07 - Michel Kreutzer, sur France Culture (du 04/04/2022 au 07/04/2022 - disponible en podcast en intégralité dès le lundi après la diffusion du premier épisode), dans l'émission LSD -  Série documentaire "L'intelligence du vivant", de Franck Bessière, réalisée par Anne Fleury
1er épisode - "Définir le vivant" « Depuis pas mal d'années, on se rend compte que les êtres vivants, les organismes, notamment les vertébrés supérieurs, les oiseaux, les mammifères, recherchent également ce qui est source de plaisir. Un vivant, c'est donc aussi un être qui recherche des plaisirs et qui essaie d'éviter les déplaisirs. C'est une des raisons sans doute pour laquelle aujourd'hui, on donne tant d'importance à la souffrance animale et qu'on estime que l'on doit se donner des règles éthiques dans nos relations avec les animaux. »
2ème épisode - "L'humain un vivant d'exception"
3ème épisode - "Dans la tête des animaux" « Les émotions entrent pleinement dans les études éthologiques, qui ne se limitent donc plus seulement aux comportements. »
4ème épisode - "Le génie du vivant"

2022/03/30 - Michel Kreutzer, au Musée du Quai Branly - Université populaire 2021/2022, Thème 2 : Le corps - "L'"apprendre animal" : comment le savoir se transmet et s'apprend chez les animaux" 
2021/12/07 - Rana Esseily, Carla Aimé, Dalila Bovet et Maya Gratier, à la Philharmonie de Paris - Colloque "Pédagogie du chant choral" - "Résultats de l'étude scientifique -  impacts sur les capacités psychosociales, les apprentissages scolaires et le bien-être des enfants" (10h20)
https://philharmoniedeparis.fr/fr/activite/colloque/23002-pedagogie-du-chant-choral
2021/10/26 - Michel Kreutzer, sur France Inter, dans l’émission "Grand bien vous fasse" - "Autour des ‘Folies animales'"
2021/10/13 - Michel Kreutzer interviewé par Caroline Lachowski, sur RFI , dans l'émission "Autour de la question" - "La folie est-elle le propre de l’homme ?"
2021/10/11 - Rana Esseily sur France Culture, dans l'émission "La méthode scientifique" - "Rire : c’est du sérieux!"
2021/03/28 - Michel Kreutzer, interviewé par Octave Larmagnac-Matheron, dans Philosophie magazine - "Zoopsychiatrie : À la découverte des folies animales"
2021/03/25 - Michel Kreutzer, invité de l’association CVA (Connaissance et Vie d’Aujourd’hui) de Lille - Conférence "Éthologie : sommes-nous tous des bêtes ?"


ARCHIVES TELE / RADIO
2017/10/26 : France Infos junior - "Que se passe-t-il dans la tête des bébés ?"
2017/03/26 : France Inter - "Les Savanturiers" - en direct du salon du livre (à partir de 40 min 20) pour la promotion de La science à Contrepied paru aux éditions Belin.
2017/04/12 : France 3 - Le monde de Jamy : "Ces animaux si proches de nous"
2015/01/02 : France 5 - C dans l'air : "Mon chat est-il une personne ?"
2014/07/07 : France culture - Les matins d'été, 2ème partie : Les invités culture/Idées. "Malin comme un corbeau", avec deux éthologues Agatha Lievin-Bazin et Valérie Dufour (à partir de la 98ème minute).
2013/06 : NBC News - "Finches sing like birds and their dad taught them how"
2014/04 : France Culture - "L'intelligence du perroquet"
2013/10 : France Culture - Emission Continent Science : "L’homosexualité animale" (audio 54').
Cité des sciences et de l'industrie - Cycle de conférences Universciences "Corps et esprit : indissociables" : "Accéder à la vie subjective des animaux" - Michel Kreutzer.
2012/12 : The Telegraph "Parrot listens to Scissor Sisters' music".
2012/12 : France 5 - Emission "On n'est pas que des cobayes" : "Les éléphants ont-ils peur des souris".
2011/05 : France Inter - Emission "Vivre avec les bêtes", 29 mai :  http://www.franceinter.fr/em/vivre-avec-les-betes/105163 (05/2011)

ARCHIVES PRESSE ECRITE
2019/11/30 : The Economist - Male nightingales spend the winter practising.
2019/11/26 : New Scientist - Nightingales practise new songs in winter to impress mates in spring.
2017/03 :  Sciences Psy - Le tempo de notre quotidien - Et si nous prenions le temps ?, pp.30.
2014/12 : Santé magazine, n°469 sur l'empathie.
2014/09/03 : BMC - The unheard message of larksong.
2014/06 : JDD - L'intelligence des corbeaux
2013/11 : JDD - Comment les oiseaux apprennent-ils à chanter ?
2012/03&04 : Cerveau&Psycho - Le perroquet mentaliste.
2011 : Le Pigeon en Ville - La vie sociale du pigeon Bizet.
2011/12 : Le Républicain Lorrain - Les pigeons sont physionomistes.
2011/08 : Futura Sciences -  Les canaris font leur show... et s'adaptent à leur public !
2011/08 : Les Echos - Le perroquet, une langue et un cerveau.
2011/05 : BBC News - Parrots choose to work together.
2011/05 : Maxisciences - Intelligence du perroquet gris : collaboration et personnalité.
2011/05 : PhysOrg - Parrots display teamwork and decision-making skills.
2009/04 : Science Actualité, Universciences - Des piafs malins comme des singes.
2005/02 : BBC News - Sleep helps birds sing better.
A good night's sleep helps young birds master the art of singing, but only after a rather groggy start, Nature magazine has reported.
Savoirs Essonne - Masculin/féminin : le genre existe-t-il chez les animaux ?

Contribution de Laurent Nagle : "Les lions et les lionnes : des prédateurs aux moeurs parfois surprenantes" et  "L'antiquité gréco-romaine : un foyer d'anti-spécistes avant l'heure ?"
Le lion dans le pourtour méditerranéen sous la direction de Margaux Spruyt et Véronique Vassal - journées d'études du 11 & 12 mai 2023 à l'Institut Catholique de Paris. Editions du Cerf, janvier 2025