Samanburður mælitalna undirprófa og prófhluta í WISC-IVis og WPPSI-Ris hjá sex til sjö ára börnum
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Other TitlesThe comparability of WISC-IVis and WPPSI-Ris scaled scores in a sample of six to seven years old children
CitationSálfræðiritið 2008, 13:97-108
AbstractNorms for the Icelandic standardization of WPPSI-R and WISC-IV overlap for six to seven years old children. Data is lacking on the comparability of IQs in WPPSI-RIS and index scores in WISC-IVIS. In this study, six core subtests on the WISC-IVIS and ten core subtests on the WPPSI-RIS were administered to 50 six to seven years old children. The children's performance was compared on subtests, index scores and IQs in the two instruments. A significant corrlelation emerged between WPPSI-RIS Full Scale IQ and WISC-IV18 General Ability Index (r = 0,75, p<0,01), WPPSI-RIS Verbal IQ and WISC-IVIS Verbal Comprehension Index (r = 0,74, /?<0,01), WPPSI-RIS Performance IQ and WISC-IVIS Perceptual Reasoning Index (r = 0,66, /?<0,01). Multivariate analysis of variance (MANOVA) was conducted to investigate if there was a significant difference between scaled scores on the four subtests with the same names in WPPSI-RIS and WISC-IVIS (Vocabulary, Similarities, Comprehension, Block Design), three IQ's, and three Indexes in the two tests. The multivariate analysis of variance yielded a significant F ratio of 14, 31 (df = 7/43, p<0,001). Univariate F tests revealed that this was because the difference between Vocabulary (/?<0,001) on the two instruments, Comprehension (p<0,005), and Block Design ( /?<0,001), were significant. The difference between Full Scale IQ on the WPPSI-RIS and General Ability Index on the WISC-IVIS was nonsignificant (p=0,491). The same applies to WPPSI-RIS Verbal IQ and WISC-IVIS Verbal Comprehension Index (p=0,089) and between WPPSI-RIS Performance IQ and WISC-IVIS Perceptual Reasoning Index Q?=0,315). However, the nonsignificant difference between Verbal IQ and Verbal Comprehension Index on the one hand and Performance IQ and Perceptual Reasoning Index on the other hand is only equivocal, since significant main effects of sex and order of test administration emerged on WPPSI-RIS Verbal IQ and WISC-jyis Verbal Comprehension Index. In general, the results of this study indicate that WPPSI-RIS Full Scale IQ and WISC-IV^ General Ability Index are comparable.
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