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Genetic and Extragenetic Variance In Motor Performance
Published online by Cambridge University Press: 01 August 2014
Abstract
A simple additive model of genes plus environment, based on intrapair similarities observed in 35 MZ and 35 like-sexed DZ twin pairs, was used to estimate the relative contribution of genetically controlled phenotypic variance in psychomotor individuality. Subjects practiced 50 trials on a pursuit rotor apparatus under a 20-sec/20-sec, work-rest schedule with a 30 min rest pause allowed between trials 30 and 31. Analyses of the data disclosed that a greater proportion of genetic factors, as opposed to nongenetic factors, appears to account for existing individual differences in motor performance among individuals subject to similar environmental conditions. The strength of this genetic control, however, systematically diminished throughout the course of practice obeying a monotonie trend over trials.
- Type
- Research Article
- Information
- Acta geneticae medicae et gemellologiae: twin research , Volume 26 , Issue 3-4 , October 1977 , pp. 197 - 204
- Copyright
- Copyright © The International Society for Twin Studies 1977
References
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