Applying Biometric Growth Curve Models to Developmental Synchronies in Cognitive Development: The Louisville Twin Study

作者：Finkel, Deborah^*; Davis, Deborah Winders; Turkheimer, Eric; Dickens, William T

来源：Behavior Genetics, 2015, 45(6): 600-609.

DOI：10.1007/s10519-015-9747-1

• Cognitive development
• Latent growth curve
• Longitudinal twin design
• Louisville Twin Study
• Genetic continuity
• Genetic discontinuity

Biometric latent growth curve models were applied to data from the LTS in order to replicate and extend Wilson's (Child Dev 54:298-316, 1983) findings. Assessments of cognitive development were available from 8 measurement occasions covering the period 4-15 years for 1032 individuals. Latent growth curve models were fit to percent correct for 7 subscales: information, similarities, arithmetic, vocabulary, comprehension, picture completion, and block design. Models were fit separately to WPPSI (ages 4-6 years) and WISC-R (ages 7-15). Results indicated the expected increases in heritability in younger childhood, and plateaus in heritability as children reached age 10 years. Heritability of change, per se (slope estimates), varied dramatically across domains. Significant genetic influences on slope parameters that were independent of initial levels of performance were found for only information and picture completion subscales. Thus evidence for both genetic continuity and genetic innovation in the development of cognitive abilities in childhood were found.

• 出版日期2015-11
• 单位东南大学; 东北大学