Abstract:YEARS AGO Lewin (12) proposed a theory of nientai deficiency based upon the results of studies dealii^ with the behavior of normal and retarded children m situations cancented with the resumption of interrupted tasks, the process of satiation, and the acceptance of substitute activity The basic ideas are: (a) that individuals beccRtne differentiated into ps)rchological r^ions (tension systems), and (b) that these r^ions are separated by functional botmdaries which differ in degree of rtgtdity (permeability) Th… Show more
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