Most models of trade in speculative markets assume that agents interpret public information identically. The authors provide empirical evidence on the relation between the volume of trade and stock returns around public announcements, and they argue that the evidence is inconsistent with this...

Partnerships and profit sharing are often claimed to motivate workers by giving them a share of the pie. But in organizations of any significant size, the free-rider effects would seem to choke off any motivational forces. This analysis explores how peer pressure operates and how factors such as...