Shyness is a commonpersonality trait among young children.
害羞是小孩子们共同的性格特征。
2
Borderline personality disorder (BPD) is the most commonpersonality disorder.
边缘性人格障碍是一种最常见的人格障碍。
3
Although the dark triad personality type appears to be universal in human society, having been identified in 57 countries, it does exact real costs - otherwise bad boys would be more common.