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