This study, which is part of a Moscow longitudinal twin project, aims to explore genetic and environmental contributions to inter-individual variability of temperamental traits in adolescence on the basis of a Russian sample. 85 monozygotic (MZ) and 64 same-sex dizygotic (DZ) twin pairs aged 12 to 14 completed the children's version of the Rusalov Structure of Temperament Questionnaire (C-STQ). The results of model-fitting analyses indicate considerable hereditary determination of individual differences in 3 out of the 8 C-STQ dimensions - Social tempo, Object-related emotional sensitivity, and Social emotional sensitivity. Non-shared environmental effects explained the rest of the total variance in these dimensions. Individual differences in the remaining STQ dimensions were due to environmental factors.
E. D. Gindina, Psychological Institute of the Russian Academy of Education, Developmental Behavior Genetics Laboratory, Mokhovaya str., 9 V, Moscow 103009, Russian Fedaration
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