Quantifying practice effects in longitudinal research with the WISC-R and WAIS-R: a study of children and adolescents with hemophilia and male siblings without hemophilia
Abstract
OBJECTIVE: To quantify practice effects associated with annual administrations of WISC-R and WAIS-R in children and adolescents with and without hemophilia. METHODS: Participants were young men (age: 7-19; 80 with hemophilia, 30 siblings) enrolled in the Hemophilia Growth and Development Study. Participants with hemophilia completed age-appropriate Wechsler scales at baseline and at four annual follow-ups; the siblings, at baseline and one 2-year follow-up. Regression analyses were used to quantify average changes in scores, adjusting for variables related to test performance. RESULTS: Consecutive annual evaluations were free of significant practice effects for 4 years with the Verbal Scale and for 2 years with the Performance Scale. VIQ decreased, and PIQ increased over time. Baseline VIQ was related to changes in VIQ; baseline PIQ and number of test-specific retests were related to changes in PIQ. CONCLUSIONS: The findings support use of Wechsler scales for annual evaluations to monitor cognitive development in children and adolescents.
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When a participant underwent a Wechsler test within the previous 12 months (n = 4), the first score was obtained rather than retesting, to prevent an inflated score due to a practice effect.
“When a participant underwent a Wechsler test within the previous 12 months (n = 4), the first score was obtained rather than retesting, to prevent an inflated score due to a practice effect (18).”
From Cognitive and Motor Outcome in Patients with Early-Detected Central Congenital Hypothyroidism Compared with Siblings (2021) · cites this paper as [18]
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Naafs, J. C., Marchal, J. P., Fliers, E., Verkerk, P. H., Luijten, M. A. J., Boelen, A., van Trotsenburg, A. S. P., & Zwaveling-Soonawala, N. (2021) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/clinem/dgaa901 · Cited by 21 · see citing works
- Authors
- Sirois, P. A.
- Affiliations
- Tulane University (US)
- Corresponding author
- Sirois, P. A.
- ORCID
- Sirois, P. A.
- Venue
- Journal of Pediatric Psychology
- Publisher
- Oxford University Press (OUP)
- Published
- 2002-03-01
- Volume
- 27
- Issue
- 2
- Pages
- 121-131
- ISSN
- 0146-8693 (ISSN-L)
- 1465-735X
- OpenAlex
- W2159133380
- Cited by
- 17
- References
- 0
- Citations by year
- 2025: 1 · 2022: 1 · 2020: 2 · 2017: 1 · 2016: 2 · 2014: 1
- FWCI
- 1.20
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Pediatric Psychology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (n01hd043200-021, 5m01rr006020-13)
- U.S. Public Health Service (MCJ-060570)
- National Center for Research Resources (M01 RR06020, M01 RR 00059, M01RR000059, M01RR000071, M01RR002558, M01-RR-00071, M01-RR02558)
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (N01-HD-43200)
- Topics
- Social Sciences › Psychology › Applied Psychology › Psychological Testing and Assessment
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
- Health Sciences › Medicine › Hematology › Hemophilia Treatment and Research
- Keywords
- practice effects, WISC-R, WAIS-R, hemophilia, cognitive development, intelligence testing, verbal IQ, performance IQ, siblings, children and adolescents, longitudinal cognitive assessment
- MeSH terms
- Adolescent, Adult, Child, Child Development, Chronic Disease, Hemophilia A, Humans, Intelligence, Longitudinal Studies, Male, Nuclear Family, Practice, Psychological, Psychometrics, Wechsler Scales, Reproducibility of Results
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