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