500对双生子身心发育三年追踪研究

Based on the twin registering system firstly established in China, we performed a three-year trace study on the physical, mental, personality and behavior traits of twins. 503 twins in total, with the pair ratio of 1.9 and 1, participated in this study. Except for "hyperactive" and "violation of discipline" in boys and "body complication " and "cruel" in girls, most of the behavioral and personality traits didn't show differences between the MZ and DZ. However, the in-pair difference of the behavior traits became smaller and smaller with ages, and accompanying with the strong impact of family environmental factors. The difference between the MZ and DZ was significant during adolescence, which clearly shows the complex function of hereditary and environmental influences. Both the intelligent scales of the MZ and DZ children show significant evidence of catch-up growth, but only part of the language or performing scales show a strong "track" hereditary tendency. Besides, these hereditary influences can only be expressed under the strong impression of environmental influence. The environmental factors were divided into two kinds, the "enjoy together" and "enjoy non-together", and the interactions between them and the hereditary factors were analyzed. Based on the adolescent developmental changes, both in the physical and mental aspects, the usefulness of twin study in the research areas of child and adolescent health is also discussed by the authors.

对500对双生婴幼儿进行短期追踪研究。