approached significancep = 0.055
Likewise, child’s gender was not significantly associated with the prosociality scores, albeit two gender difference approached significance (for Ball 18-months t = −1.93, df = 139, p = 0.055, M male = 0.44 (0.50) M female = 0.60 (0.49); for Pen 18-months t = 1.78, df = 139, p = 0.077, M male = 0.60 (0.49) M female = 0.45 (0.50); for all others measures, t s ranged from 0.014 to 1.36, all p > 0.178).