Temple University Psychologist Frank Farley can explain the recent behavior and DUI arrest of popstar Justin Bieber, as well as other child stars who have run afoul of the law. A former president of the American Psychological Association, Farley is an expert on thrill-seeking, or "Type-T" personalities.

In the Jan. 17 Discovery News, Farley outlined how the "Type-T" personality helps, and often hinders, young celebrities like Bieber. http://news.discovery.com/human/psychology/why-child-stars-fall-apart-140117.htm