This research tries to study the effects of genetical and environmental influences on the intelligence and scholastic achievement of twins. We analyzed the change course of intelligence and scholastic achievement of twins for 12 years, which is based ...
This research tries to study the effects of genetical and environmental influences on the intelligence and scholastic achievement of twins. We analyzed the change course of intelligence and scholastic achievement of twins for 12 years, which is based on Living Record Paper of twins. In this study, the Living Record Papers for 69 monozygotic twins and 43 dizygotic twins were collected and analyzed, who are living and attending the elementary school and the middle school in Koseong-gun, Kyeongsang Namdo. Generally the intelligence and scholastic achievement of national language, mathematics, social science, and natural science are shown the tendency that inheritance generally affects more than environments in early school years, even though the influence of environment is increasing or maintaining as they are getting older.