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Predictive validity of short forms of the WPPSI
Author(s) -
Bishop D. V. M.
Publication year - 1980
Publication title -
british journal of social and clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.479
H-Index - 92
eISSN - 2044-8260
pISSN - 0007-1293
DOI - 10.1111/j.2044-8260.1980.tb00945.x
Subject(s) - predictive validity , psychology , short forms , developmental psychology , criterion validity , regression , statistics , wechsler preschool and primary scale of intelligence , incremental validity , test validity , wechsler intelligence scale for children , intelligence quotient , psychometrics , construct validity , clinical psychology , mathematics , cognition , psychiatry , psychoanalysis
Longitudinal data from 139 unselected children given the WPPSI at 4½ years and WISC‐R at 8½ years are used to investigate the predictive validity of short forms of the WPPSI formed by summing scaled scores of fewer than 10 subtests. Predictive validity increases asymptotically with number of subtests in the short form. The particular combination of subtests constituting a short form of given length does not appear to significantly affect predictive validity. Regression coefficients are provided to enable the reader to estimate future IQ from a given short form score.