Sex stereotypes influence adults' perception of babies' cries

Background: Despite widespread evidence that gender stereotypes influence human parental behavior, their potential effects on adults’ perception of babies’ cries have been overlooked. In particular, whether adult listeners overgeneralize the sex dimorphism that characterizes the voice of adult speakers (men are lower-pitched than women) to their perception of babies’ cries has not been investigated. Methods: We used playback experiments combining natural and re-synthesised cries of 3 month-old babies to investigate whether the interindividual variation in the fundamental frequency (pitch) of cries affected adult listeners’ identification of the baby’s sex, their perception the baby’s femininity and masculinity, and whether these biases interacted with their perception of the level of discomfort expressed by the cry. Results: We show that low-pitched cries are more likely to be attributed to boys and high-pitched cries to girls, despite the absence of sex differences in pitch. Moreover, low-pitched boys are perceived as more masculine and high-pitched girls are perceived as more feminine. Finally, adult men rate relatively low-pitched cries as expressing more discomfort when presented as belonging to boys than to girls. Conclusion: Such biases in caregivers’ responses to babies’ cries may have implications on children’s immediate welfare and on the development of their gender identity

Infant difficult behaviors in the context of perinatal biomedical conditions and early child environment

<p>Abstract</p> <p>Background</p> <p>Problems experienced within the first year of an infant's life can be precursors of later mental health conditions. The purpose of this study was to examine the frequency and continuity of difficult behaviors in infants at 3 and 6 months of age and the associations of these difficulties with biomedical and psychosocial factors.</p> <p>Methods</p> <p>This study was a part of an ongoing prospective birth-cohort study. Study participants were 189 uniparous mothers and their full-term newborns. The index of infant difficult behavior was constructed. This index was then associated with the following factors: delivery mode, newborn function after birth, maternal emotional well-being, risk behavior, subjective evaluation of the quality of the relationship of the couple, and attitudes toward infant-rearing.</p> <p>Results</p> <p>Common difficult behaviors, including crying, sleeping and eating problems, were characteristic for 30.2% of 3 month old and for 22.2% of 6 month old full-term infants. The expression of infant difficult behaviors at the age of 3 months increased the likelihood of the expression of these difficulties at 6 months by more than 5 times. Factors including younger maternal age, poor prenatal and postnatal emotional well-being, prenatal alcohol consumption, low satisfaction with the couple's relationship before pregnancy, and deficiency of infant-centered maternal attitudes towards infant-rearing increased the likelihood of difficult behaviors in infants at the age of 3 months. Low maternal satisfaction with the relationship of the couple before pregnancy, negative emotional reactions of both parents toward pregnancy (as reported by the mother) and the deficiency of an infant-centered maternal attitude towards infant-rearing increased the likelihood of infant difficult behaviors continuing between the ages of 3 to 6 months. Perinatal biomedical conditions were not related to the difficult behaviors in infants.</p> <p>Conclusions</p> <p>Our study suggests that early onset of difficult behavior highly increases the risk for the continuation of difficult behavior during infancy. In general, the impact of prenatal psychosocial environment on infant behavior decreases from the ages of 3 to 6 months; however, some prenatal and preconceptional psychosocial factors have direct associations with the continuity of difficult behaviors through the first half-year of an infant's life.</p

Evaluating Human-Robot Interaction with Ethology

International audienceEvaluating human-robot interactions to improve them is a major challenge. Several scientific approaches are commonly used. Here, we propose that ethology, science of behaviors, could be a suitable discipline to study such question. After explanations, some examples are given to illustrate these possibilities

Adults’ implicit reactions to typical and atypical infant cues

This study investigates the valence of adults’ implicit associations to typical and atypical infant cues, and the consistency of responses across the different stimuli. 48 non-parent adults (25 females, 23 males) were presented three kinds of infant cues, typical cry (TD-cry), atypical cry (ASD-cry) and infant faces, and their implicit associations were measured by means of the Single Category Implicit Association Test (SC-IAT). Results showed that, independently of gender, the implicit associations to typical and atypical infant cries had the same negative valence, whereas infant faces were implicitly associated to the positive dimension. Moreover, data showed that implicit responses to the different infant cues were not associated. These results suggest that more controlled processes influence the perceptions of atypical infant cry, and confirm the need to investigate individual reactions to infant cues by adopting a multilevel approach

Adults’ Reactions to Infant Cry and Laugh: A Multilevel Study

Starting from the assumption that caregiving behaviours are regulated at different levels, the aim of the present paper was to investigate adults’ reaction to salient infant cues by means of a multilevel approach. To this aim, psychophysiological responses (Heart Rate Variability), implicit associations (SC-IAT-A), and explicit attitudes (semantic differential) toward salient infant cues were measured on a sample of 25 non-parents adults (14 females, 11 males). Moreover, the trait anxiety and the individual noise sensitivity were considered as controlling factors. Results showed that adults’ responses were moderated by the specific measure considered, and that responses at the different levels were only partially consistent. Theoretical and practical implications were discussed