Measurements were obtained of 4-yr.-old children's preferences for enterable play boxes having various degrees of openness. In their use of boxes, Ss strongly favored those boxes having least degrees of openness and greatest amounts of encapsulation. Consideration is given to stimulus factors possibly reinforcing the observed preferences.
References
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GramzaA. F.WittP. A.Choices of colored blocks in the play of preschool children. Perceptual and Motor Skills, 1969, 29, 783–787.
