本文以青少年為研究對象，使用相關研究和實驗設計探究自戀與親社會傾向及與現實情境中親社會行為的關系。研究1表明，對男性而言，自戀與公開的親社會傾向之間存在正相關，與匿名的親社會傾向之間不存在相關;而女性的自戀與公開、匿名的親社會傾向之間均不存在顯著相關。研究2通過行為實驗證實，在公開的情境下，男性青少年中高自戀者比低自戀者做出更多的親社會行為;而在非公開的情境下，高低自戀者的親社會行為沒有差異。研究結果揭示，男性青少年自戀者將親社會行為作為自我調節的策略之一。

Narcissism was found to be associated with low empathy, insensitive to the need of others and having a tendency to use others for ones’ own gains. That is, narcissists may lay more emphasis on selfish values than prosocial ones. Thus, they may not help with social activities voluntarily unless they are beneficial to enhance their self-worth or self-image. On the other hand, studies have found that help is more likely to occur when one behaves in front of audiences in nonemergency situations. This is because prosocial behaviors can be used for self-enhancement such as gaining good reputation or promoting a positive self-image. Narcissists are good at using interpersonal relationships for self-regulation. They are excessively dependent on others to gain a sense of identity and are motivated to seek continuous external self-affirmation to build or maintain desired selves. From this point of view, narcissists may very likely do prosocial behaviors for seeking continuous external self-affirmation to build or maintain desired selves. In this research, two studies were conducted to explore the relationship between narcissism and prosocial tendencies and actual prosocial behaviors on two different situations---whether there are people watching or not. Study 1 aimed at exploring Chinese narcissistic individuals’ self-reported public and anonymous prosocial tendencies. Public prosocial tendency refers to a tendency to perform prosocial behaviors in front of others while anonymous prosocial tendency refers to a tendency to help without consciousness of being noticed or acknowledged. Participants completed Narcissistic Personality Inventory and Revised Prosocial Tendencies Measure. It revealed that narcissism was positively associated with self reported public but not anonymous prosocial tendency among male participants. Study 2 aimed at exploring whether the prosocial behaviors of narcissists were truly influenced by the publicity of the situations in the real world. Participants were randomly assigned to two conditions according to whether group members know the others’ donation or not. The results showed that male narcissists donated more money to a charity than non-narcissists in a public situation when their contributions were watched by others. However, their prosocial behaviors were not different in a private situation when individuals’ contributions were kept secret. The findings of our studies imply that narcissism may use prosocial behaviors in the service of self-regulation. It increases the knowledge of narcissists’ self regulatory strategies that, besides many maladaptive behaviors, prosocial behaviors can also be used to enhance narcissists’ self-view.