Intrinsic vs. Extrinsic Motivations to Volunteer and Social Capital Formation
研究了不同志愿服务动机（内部动机如理想、助人愿望，外部动机如社会认可、扩大社交圈）对志愿者社会资本（合作关系的数量和质量）的影响，发现内部动机促进高质量关系，外部动机仅增加关系数量。
SUMMARY Although intrinsic motivations receive increasing attention in explaining human actions, our knowledge on their causes and effects is incomplete. Quite surprisingly, the existing literature fails to consider the relationship between intrinsic motivations and social capital formation. The present paper increases the understanding on the effect of intrinsic motivations by studying the role that different motivations to volunteer have on the creation of volunteers' social capital which is intended as networks of cooperative relations. Our empirical analysis considers three indices of social capital, aimed at measuring both the quantitative (number) and the qualitative (degree of familiarity and cooperation) character of social relations, and intrinsic and extrinsic motivations to volunteer (ideal motivations, the desire to feel useful to others, the pursuit of social recognition and the desire to increase the number of acquaintances or friends). We find that the creation of social capital through participation in voluntary associations is not indifferent to the motivations which induced the volunteer to start his/her unpaid activity. In particular, we show that intrinsic motivations enable people to extend their social networks by creating relations characterized by a significant degree of familiarity. By contrast, extrinsic motivations, and in particular the decision to join an association in order to increase the number of acquaintances or friends, promote the creation of networks from a quantitative point of view, but they do not facilitate the creation of relations based on a particular degree of confidence.