Systematic Review and Meta-Analyses Reveal no Gender Difference in Neonatal Social Perception

Abstract

Women score higher than men on measures of social cognition such as empathy and reading non-verbal cues. How early does this gender difference emerge? Systematic review and meta-analyses were used to assess gender difference in social perception within 1 month of birth. A total of 31 studies (40 experiments) reported on gender effects in 1936 neonates (50% girls) between 1968 and 2021. No significant difference (Hedges’ g = 0.076, p = 0.321) was found across 20 experiments measuring visual fixation on human faces. Nine experiments on neonatal imitative crying also revealed no gender difference (g = 0.157, p = 0.118). Seven studies using the Neonatal Behavioral Assessment Scale found no gender difference in total orientation (g = 0.161, p = 0.154), but girls oriented more to both animate (g = 0.279, p = 0.011) and inanimate (g = 0.242, p = 0.003) stimuli in the studies that analyzed these separately. Existing evidence supports a possible maturational difference but not a specific social advantage for girls at birth. While more research and better reporting are needed, the present findings challenge the claim that girls are innately more socially perceptive than boys.