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Effective education requires strategic consideration. If students doubt the motives of teachers and advisors, then students rationally ignore the advice they receive. Valuable information is lost in such bad communication outcomes and, consequently, the quality of education suffers. In this paper, we argue that an advisor's sacrifice is an essential virtue of a good advisor for efficient communication...
Norms that restrict choice sets or impose otherwise harsh requirements would seem to act as barriers to group formation by raising the costs of adherence to potential and continuing members. Contrary to that intuition, one observes a broad range of group norms in the real world that impose large costs on group members. Iannaccone provides a rationale for harsh norms as a mechanism to reduce free‐riding...
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