Abstract: In order to make comparisons between the results obtained from goldenhaired monkeys on the generalization of objects, photographs and pictures.,with that of children, another experiment was performed on 10 yr. 7 monthto 2 yr. 6 month old children. The method was similar to that ofexperiment I. At the beginning of the experiment, each child was given avery simple verbal instruction. ALL Ss' stable discrimination to the basicdiscriminative stimuli were established rapidly, this was probably due to themediation of children's language development. In the subsequent tests it wasshown that the ability of transfer of the discrimination from solid objects totwo dimensional pictures of children seemed to improve with age. This wasparallel with the development of children's language.

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