摘要:A positive view of the self is often portrayed as a valuable asset in the sense that it can have performance enhancing properties. Using data on self-esteem { the most fundamental manifestation of positive self evaluations { and high school grade point averages of American students we produce results in line with this idea and nd a positive link between favorable self-evaluations and higher levels of educa- tional performance. However, when we exploit exogenous variation in self-esteem due to adolescent skin problems in order to account for the possible endogeneity of self-esteem, this nding is reversed and we obtain a negative eect on performance. We discuss mechanisms that may generate such an adverse causal eect of positive self-evaluations, and conclude that self-esteem and eort need not always be comple- ments but can actually be substitutes.
关键词:self-evaluations; self-esteem; non-cognitive skills; human capital; perfor-;mance.