Developmental changes in retention and generalization of nonadjacent dependencies over a period containing sleep in 18-mo-old infants

Average (triangles) and individual (dots) looking times to familiar trials (light gray) compared with unfamiliar trials (dark gray) in experiment 1. (Left) Nap data from 15 mo olds from Gómez et al. (2006). (Right) Eighteen month olds’ looking times. Targeted t-tests revealed that 18 mo olds looked significantly longer toward familiar trials, while 15 mo olds showed no difference in average looking time between trial types.