Looks and gaming: Who and why?
利用美国Add Health纵向数据，研究发现外貌更好看的成年人拥有更多亲密朋友，因而游戏时间更少；外貌吸引力对青少年和成年人的游戏参与及时间投入有显著影响，且这种关系对成年人可能是因果性的。
Americans spend 2.5 percent of their waking hours video-gaming. Using the American Add Health Study, we show that adults who are better-looking have more close friends. Gaming being costlier for them, they engage in less of it. Physically attractive teens are less likely than others to game at all. Attractive adults are less likely than others to spend any time gaming; if they do, they spend less time on it than other gamers. The reverse is true among teens and adults for some other non-market activities—sports and hobby groups. Using the longitudinal nature of the Study, we find that these relationships may be causal for adults: good looks decrease gaming time, not vice-versa. The results provide new evidence on how looks affect non-market time use and perhaps indicate the role that they play in personal development.