Japanese Psychological Research
Online ISSN : 1468-5884
Print ISSN : 0021-5368
TRAINING ON CLASS INCLUSION PROBLEMS
GIYOO HATANOKEIKO KUHARA
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1972 年 14 巻 2 号 p. 61-69

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13 5-6-year-olds were trained on class inclusion problems as representative of tasks concerning the grasp of logical relations. Training program consisted mainly of presenting two classes having inclusive, mutually implicational or partly overlapping relation, asking their numerical comparison, asking whether or not AΛB and AΛB are empty, giving feedback and explanation, and, where indicated by S' response pattern, auxiliary training in double classification and/or visualization of relationships. Against a fairly strict criterion, 8 Ss acquired not merely the “inclusion response, ” but a true grasp of inclusive relation. Variability of logical relations in the training and two ‘prompting questions’ concerning AΛB and AΛB seemed to be essential components of this effective program.

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