Sixteen preschool children each had four 1-min (familiarization) trials with two toys, identical except for color, from each of two different sets of toys. On each trial, S chose one of the two toys. Sixteen other children had 16 familiarization trials with each toy set. Alternations of choice on successive trials significantly exceeded chance in both groups. On a special task trial (fifth or 17th trial) for each toy set, S could choose one or both familiar toys or a third novel toy which was damaged. Frequency of choice of the novel toy was higher in Group 16 than in Group 4, but not significantly so. In both groups, however, a significantly greater proportion of Ss chose the novel toy than did Ss in a third group who had no familiarization trials preceding the task trial.
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