Size constancy in mental retardates and normals: A signal-detectability analysis

Ira H. Bernstein, Richard M. Day

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Investigated size constancy differences among 11 institutionalized retardates, 6 noninstitutionalized retardates, 12 institutionalized normals (prison inmates), and 20 noninstitutionalized normals (college students) by psychometric function, signal detectability, and uncertainty analyses. Both retarded groups were perceptually deficient in making size judgments. This impairment paralleled that found between nonparanoid schizophrenics and normals by R. Price and C. Eriksen (see pa, vol. 40:9050). In addition, institutionalized retardates were less consistent in use of decisional rules than noninstitutionalized retardates. (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)177-179
Number of pages3
JournalJournal of Abnormal Psychology
Issue number2
StatePublished - Oct 1971


  • size constancy, psychometric function & signal detectability & uncertainty analyses, institutionalized vs. noninstitutionalized retardates vs. normals, contribution to R. Price & C. Eriksen's results

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry


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