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Mental retardation and WAIS‐R difference scores
Author(s) -
ATKINSON L.
Publication year - 1991
Publication title -
journal of intellectual disability research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 104
eISSN - 1365-2788
pISSN - 0964-2633
DOI - 10.1111/j.1365-2788.1991.tb00451.x
Subject(s) - wechsler adult intelligence scale , psychology , intelligence quotient , wechsler intelligence scale for children , reliability (semiconductor) , clinical psychology , short forms , significant difference , wechsler preschool and primary scale of intelligence , psychometrics , developmental psychology , standard error , audiology , psychiatry , medicine , statistics , cognition , mathematics , power (physics) , physics , quantum mechanics
. This article explores the psychometric properties (reliabilities, standard deviations and measurement errors) of Wechsler Adult Intelligence Scale‐Revised (Wechsler, 1981) subtest difference scores . The sample consisted of 290 subjects with IQ <80. Results demonstrated less than satisfactory difference score reliability and disproportionate measurement error. Nevertheless, neither property was so inadequate as to render cautious profile interpretation impossible. The tabled values can help clinicians working with developmentally delayed clients interpret differences between subtest scores based on statistically reliable discrepancies.