We investigate the welfare effect of increasing competition in an anonymous two-sided matching market, where matched pairs play an infinitely repeated Prisoner's Dilemma. Higher matching efficiency is usually considered detrimental as it creates stronger incentives for defection. We point out,...

I discuss economic approaches to the demand for harmfully addictive substances and estimate time-series demand functions for the period from 1975 through 2003. My estimates suggest that changes in price can explain a good deal of the observed changes in cigarette smoking, binge alcohol drinking,...

Epidemiological data and experimental research in the fields of operant conditioning and behavioral economics suggest that employment may be useful in the treatment of drug abuse. The conditions under which employment should decrease drug use depends on a range of environmental contextual...