Relier Pairs Infant Social DevelopmentVersion en ligne Match the concepts related to social development in infants! par shannie moore 1 Demonstrate engagement when being fed 2 Be wary of strangers 3 Might like to play solitary 4 Want to be independent 5 Start to smile 6 Engage in role play 7 Will offer their toys to share Newborn 18 months 2 years By 1 year 2 years 4-6 weeks By 1 year