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