A contemporary method for developmental‐genetic analyses of age changes in intellectual abilities
- 1 January 1998
- journal article
- research article
- Published by Taylor & Francis in Developmental Neuropsychology
- Vol. 14 (1), 69-114
- https://doi.org/10.1080/87565649809540701
Abstract
The purpose of this article is to describe a methodology for the evaluation of biometric genetic hypotheses in the context of a developmental model of growth and change. Linear structural equation models are described for longitudinal and twin data, including aspects of subject attrition and practice effects. These models are applied to 2 variables measured at several points in time in the New York Twin Study (Jarvik, Kallman, & Falek, 1962; Kallman, Feingold, & Bondy, 1951). The patterns of psychometric and biometric changes are different for the 2 intellectual variables. Substantive results are discussed in relation to gf/gc theory (Cattell, 1971; Horn, 1988), and some methodological limitations are emphasized.Keywords
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