A comparison of WISC-R and WAIS-R (PL) scores of children and adolescents in a longitudinal study

Krystyna Sochacka

doi:10.18290/rpsych.2016.19.1-6en

Krystyna Sochacka Institute of Pedagogy, State Higher Vocational School in Nowy Sącz

DOI: https://doi.org/10.18290/rpsych.2016.19.1-6en

Keywords: IQ stability; intelligence tests; WISC-R; WAIS-R (PL)

Abstract

Wechsler’s tests were used to examine the same group of subjects within the intellectual norm (N = 31) twice over an interval of 13 years: the Wechsler Intelligence Scale for Children (WISC-R; the subjects’ mean age was 8 years) and the Wechsler Adult Intelligence Scale (WAIS-R; mean age – 21 years). Each measurement was carried out by the same person. Based on 62 protocols (answer sheets), intelligence quotients, scaled subtest scores, and factor scores obtained using WISC-R were compared both with the normalized version of WAIS-R (PL) (2004) and with the version of WAIS-R (PL) from before normalization (1996). Statistically significant differences were found between the results obtained using WISC-R and the normalized version of WAIS-R (PL). There is no such difference between WISC-R and the earlier version of WAIS-R (PL), from before normalization. Implications for clinical practice are discussed.

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