Genetic studies of intelligence perso-nality, handwriting patterns and mentalhealth status were carried out with twinmethod, 38 pairs of twins (MZ 22 pairs,DZ 16 pairs) were involved in IQ studiesand a part of these twins were involved inother studies.

• 作者采用双生子法对38对双生子(其中MZ22,DZ16)的智商,以及其中部分双生子的个性、笔迹和心理健康状况等行为特征进行遗传学研究。