The effect of previous play with a contingent partner on 16-month olds' tool use learning.

Comparison of the means of infants' three score types obtained on the Rake Task in the Non-Mimicry + Demo Condition with score means in the other three conditions where infants were mimicked by the experimenter (Mimicry + Demo) or played alone before the demonstration (Play Alone + Demo) or again played alone, but did not see a demonstration (Play Alone + No Demo or Baseline). Bold numbers indicate significant differences between means (pThe effect of previous play with a contingent partner on 16-month olds' tool use learning.