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ERIC Number: EJ1106705
Record Type: Journal
Publication Date: 2016-Aug
Pages: 10
Abstractor: As Provided
ISSN: ISSN-0734-2829
Flaws in Flynn Effect Research with the Wechsler Scales
Weiss, Lawrence G.; Gregoire, Jacques; Zhu, Jianjun
Journal of Psychoeducational Assessment, v34 n5 p411-420 Aug 2016
Many Flynn effect (FE) studies compare scores across different editions of Wechsler's IQ tests. When construct changes are introduced by the test developers in the new edition, however, the presumed generational effects are difficult to untangle from changes due to test content. To remove this confound, we use the same edition of Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) across an 11-year period. Whereas previous research has reported the FE to be less than half the theoretical rate when comparing WISC-IV with Wechsler Intelligence Scale for Children-Fifth Edition (WISC-V), we find the rate of gain to be nearly identical to Flynn's prediction when comparing only WISC-IV scores over the same time period. The FE is shown to vary significantly across the domains of cognitive ability, and thus changes to the construct coverage of the WISC-V Full Scale IQ (FSIQ) composite between editions significantly affect FE findings. Implications for future FE research are discussed.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Raven Progressive Matrices; Wechsler Adult Intelligence Scale; Wechsler Intelligence Scale for Children
Grant or Contract Numbers: N/A