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Journal of Psychoeducational Assessment
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Long-Term Stability of the Wechsler Intelligence Scale for Children-Third Edition among Demographic Subgroups: Gender, Race/Ethnicity, and Age

Gary L. Canivez

Eastern Illinois University, cfglc{at}eiu.edu

Marley W. Watkins

Pennsylvania State University

Long-term stability of the Wechsler Intelligence Scale for Children-Third Edition was investigated separately across gender, race/ethnicity, and age subgroups. Participants were 642 students from 33 states evaluated twice for special education eligibility over a mean test-retest interval of 2.83 years. Gender, race/ethnicity, and age produced few or no differential effects on long-term stability coefficients. Most of the demographic subgroup stability coefficients for VIQ, PIQ FSIQ VCI, and POI scores demonstrated satisfactory long-term stability. However, stability coefficients for FDI, PSI, and VIQ-PIQ discrepancy scores were not adequate. Mean differences from first testing to second testing were either not statistically significant or not clinically meaningful for all groups, except Hispanic/Latino youths. Analysis of individual change scores indicated that only the FSIQ was sufficiently stable for use with individual students. Results extended those of Canivez and Watkins (1998), supporting long-term stability for the WISC-III among most demographic subgroups studied.

Journal of Psychoeducational Assessment, Vol. 17, No. 4, 300-313 (1999)
DOI: 10.1177/073428299901700401
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 Journal of Psychoeducational AssessmentHome page
E. R. Borsuk, M. W. Watkins, and G. L. Canivez
Long-Term Stability of Membership in a Wechsler Intelligence Scale for Children-Third Edition (WISC-III) Subtest Core Profile Taxonomy
Journal of Psychoeducational Assessment, March 1, 2006; 24(1): 52 - 68.
[Abstract] [PDF]

Home page
 Journal of Psychoeducational AssessmentHome page
G. L. Canivez, R. Neitzel, and B. E. Martin
Construct Validity of the Kaufman Brief Intelligence Test, Wechsler Intelligence Scale for Children-Third Edition, and Adjustment Scales for Children and Adolescents
Journal of Psychoeducational Assessment, March 1, 2005; 23(1): 15 - 34.
[Abstract] [PDF]