Longitudinal genetic analysis of childhood IQ in 6- and 7-year-old Russian twins
| Autor: | Sergey Malykh, Nadezhda M. Zyrianova, Lev S. Kuravsky |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Intelligence Tests
Male Intelligence quotient Shared environment Intelligence Twins Obstetrics and Gynecology Twin study Genetic analysis Developmental psychology Russia Pediatrics Perinatology and Child Health Humans Longitudinal Studies Psychology Child Genetics (clinical) Wechsler Intelligence Scale for Children |
| Zdroj: | Twin research : the official journal of the International Society for Twin Studies. 6(4) |
| ISSN: | 1369-0523 |
| Popis: | Using a longitudinal twin study of Moscow children, we have studied the development of psychometric intelligence during the transition from preschool (age 6) to school (age 7). Children were tested using the Wechsler Intelligence Scale for Children (WISC). Simplex models were applied to explore the relationship of different sources of phenotypic variance. The following sources of variation were considered: genetic effects, common or shared family environment and unique environment. At age 6, genetic influences were much greater than those of shared environment but the magnitude of genetic influences decreased and the magnitude of shared environment influences increased substantially by age 7. |
| Databáze: | OpenAIRE |
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