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

Psychometric Evaluation of the Brief Infant-Toddler Social and Emotional Assessment (BITSEA) in a Predominately Hispanic, Low-Income Sample

The goal of the present study was to evaluate the psychometric properties of the Brief Infant-Toddler Social and Emotional Assessment (BITSEA) with 12- to 15-month-old infants from predominately Hispanic, low-income families. Mothers of 144 infants were screened at a pediatric clinic as part of a larger study examining a brief home-based intervention for infants at-risk for behavior problems. Reliability was good for the BITSEA problem scale in all analyses and acceptable for the BITSEA competence scale in most analyses. Discriminative validity was supported by scores on the BITSEA competence scale significantly predicting delayed status on all ASQ-3 subscales. BITSEA problem scale scores significantly predicted scores on the total problems scale of the Child Behavior Checklist, supporting predictive validity. Analyses revealed a main effect of group on BITSEA problem scale scores, providing preliminary support for sensitivity to change for the BITSEA problem scale. Results support the BITSEA as an effective screening tool for use with young infants, Hispanic and Spanish-speaking populations, and low-income families