The underrepresentation of women in top leadership positions may result in a potential loss in efficiency. In this study, we examine gender differences in leadership emergence and efficiency when a leadership task is framed as authority or responsibility. In a public good game, the group leader is entitled to punish low contributors among the group members in order to increase the group welfare. The experimental design includes a basic treatment—framing the leader's task as authority or responsibility—in occasions where group leaders emerge through self-promotion or voting. We find a more pronounced framing effect among females compared to males. Although women are generally less willing and less voted to lead than men, the responsibility framing enhances female leaders' effectiveness to a larger extent than male leaders': they contribute more to the public good, and are more inclined to punish low contributors when they are voted as leaders. Therefore, when leadership tasks emphasize responsibility, female leaders could enhance social welfare in the provision of public goods.
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