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Long-term stability of the Wechsler Intelligence Scale for Children—Fourth Edition.
Abstract
Long-term stability of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV; Wechsler, 2003) was investigated with a sample of 344 students from 2 school districts twice evaluated for special education eligibility at an average interval of 2.84 years. Test-retest reliability coefficients for the Verbal Comprehension Index (VCI), Perceptual Reasoning Index (PRI), Working Memory Index (WMI), Processing Speed Index (PSI), and the Full Scale IQ (FSIQ) were .72, .76, .66, .65, and .82, respectively. As predicted, the test-retest reliability coefficients for the subtests (Mdn = .56) were generally lower than the index scores (Mdn = .69) and the FSIQ (.82). On average, subtest scores did not differ by more than 1 point, and index scores did not differ by more than 2 points across the test-retest interval. However, 25% of the students earned FSIQ scores that differed by 10 or more points, and 29%, 39%, 37%, and 44% of the students earned VCI, PRI, WMI, and PSI scores, respectively, that varied by 10 or more points. Given this variability, it cannot be assumed that WISC-IV scores will be consistent across long test-retest intervals for individual students.
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Cites
RUBIN, D. B. (1976) · Biometrika · doi:10.1093/biomet/63.3.581 · Cited by 9,925
Cited by
Cain, K., Oakhill, J., & Bryant, P. (2004) · Journal of Educational Psychology · doi:10.1037/0022-0663.96.1.31 · Cited by 1,496
Working memory in children with reading disabilities
Gathercole, S. E., Alloway, T. P., Willis, C., & Adams, A.-M. (2006) · Journal of Experimental Child Psychology · doi:10.1016/j.jecp.2005.08.003 · Cited by 795
Impairment in movement skills of children with autistic spectrum disorders
GREEN, D., CHARMAN, T., PICKLES, A., CHANDLER, S., LOUCAS, T., SIMONOFF, E., & BAIRD, G. (2009) · Developmental Medicine & Child Neurology · doi:10.1111/j.1469-8749.2008.03242.x · Cited by 742
Lopez, B. R., Lincoln, A. J., Ozonoff, S., & Lai, Z. (2005) · Journal of Autism and Developmental Disorders · doi:10.1007/s10803-005-5035-x · Cited by 603
Family Risk of Dyslexia Is Continuous: Individual Differences in the Precursors of Reading Skill
Snowling, M. J., Gallagher, A., & Frith, U. (2003) · Child Development · doi:10.1111/1467-8624.7402003 · Cited by 543
Metadata
- Authors
- Watkins, M. W., & Smith, L. G.
- Venue
- Psychological Assessment
- Published
- 2013
- Volume
- 25
- Issue
- 2
- Pages
- 477-483
- ISSN
- 1040-3590 (ISSN-L)
- 1939-134X
- OpenAlex
- W2162459291
- Cited by
- 252
- References
- 1
- FWCI
- 27.12
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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