Enquête van Heymans en Wiersma 1985

<p>Heredity-research of personality. Personality characteristics of family members judged by medical doctors / activity / emotionality / primary versus secondary functioning. Background variables: basic characteristics/ characteristics of parental family/household</p>人格遗传学研究。由医师评定的家庭成员人格特质：活动性、情绪性以及初级功能与次级功能。背景变量：基本特征、原生家庭特征、家庭状况。