The authors demonstrate how purely anticompetitive horizontal mergers can produce larger gains for merging firms than for nonmerging firms. Moreover, these anticompetitive mergers do not promote entry. These findings, which eliminate a long-standing free-rider problem from the previous merger...

Experimental economists frequently invoke Adam Smith's notion of sympathy, and experimental treatments typically examine sympathy in situations where two groups are involved. We explore additional implications of sympathy suggested by the work of later classical economists. We link the notion of...