Fig. 1.

VPA-exposed animals show less social behaviors at weaning (PD21). a Experimental design. Pregnant dams were injected with 600 mg/kg VPA or saline on gestational day 12.5, and their offspring tested at PD21. b–e Analysis of juvenile play at weaning in VPA and SAL pairs. b Number of play solicitations. c Number of anogenital sniffs. d Number of follows. e Time spent in affiliative behaviors (sitting side-by-side, allogrooming or other) or non-social behaviors (exploring, self-grooming or sitting alone). Unpaired Student’s t test, * p < 0.05