Abstract:Two groups of toddlers (mean ages 13 and 19 months) were observed during free play at their day care centre over a period of 7 months. Repeated measures of time spent together, frequency of prosocial behaviors and reciprocity between partners show that 60 % of one-year-olds enter stable friendship relations. Comparing exchanges with friends and non-friends reveals significant differences in structure and content. These are more numerous and marked among elder children whose friendships are more comprehensive, … Show more
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