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ERIC Number: EJ876823
Record Type: Journal
Publication Date: 2006-Sep
Pages: 15
Abstractor: As Provided
ISSN: ISSN-0022-1325
Differentiation at Higher Levels of Cognitive Ability: Evidence from the United States
Kane, Harrison D.; Oakland, Thomas D.; Brand, Christopher R.
Journal of Genetic Psychology, v167 n3 p327-341 Sep 2006
Most psychologists and educators assume that intelligence is a linear construct, meaning that smart people simply have more intelligence than their less gifted peers. Likewise, individuals with mental retardation are thought to have less intelligence. In contrast to this widely accepted belief, the authors posed an alternative hypothesis--that intelligence is qualitatively different in various populations. Using factor analysis of a standardization sample of the Woodcock-Johnson Test of Cognitive Ability (R. W. Woodcock & M. B. Johnson, 1989), the authors examined the nature of intellect across ability. Results indicated that the amount of variance attributable to Spearman's g declined as measured intellectual ability increased. (Contains 3 tables and 2 figures.)
Heldref Publications. 1319 Eighteenth Street NW, Washington, DC 20036-1802. Tel: 800-365-9753; Tel: 202-296-6267; Fax: 202-293-6130; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: United States
Identifiers - Assessments and Surveys: Woodcock Johnson Tests of Cognitive Ability