Changes in cooperation and self-other differentiation during the second year.

摘要: Cooperation in peer interaction emerges during the second half of year. A consideration skills and knowledge entailed these early forms cooperation suggests that young children's emerging ability to differentiate self from other as causal agents may relate their coordinate behavior with age mates toward a common goal. Children at 12, 18, 24, 30 months were observed same-age, same-sex dyads (8 per age) while attempting solve simple problem. They also individually administered an elicited imitation task used index decentration, or self-other differentiation. No 12-month-old dyad could cooperate, 18-month-olds did so infrequently apparently accidentally, whereas 24- 30-month-olds able one another quickly effectively. who better accommodate represented agency others more advanced, decentered level.