Personality impediment is caused by such factors as heredity, disease and social and cultural environment.
人格障碍是由遗传因素、病理因素、社会文化环境等诸方面因素共同造成的。
2
The feature is too stubborn to be completely overcome because the cause for the feature is the contradiction of steady heredity and modern changed natural and social environment.
原因是稳定的遗传和已经变化的自然及社会环境的矛盾。这一特征是顽固的，完全克服是困难的。
3
The causes for social anxiety lie in heredity, one's upbringing background, the social milieu, etc.