This paper looks at the work of Gary S. Becker, American economist, professor of sociology, friend, and colleague of Kevin M. Murphy. Murphy discusses the traditional approach of Becker's teaching and ideas as they were expressed through his wealth of content and style in course design; his discussions on the role of preferences, technology, and constraints as they influence household production; and his emphasis on the importance of markets and desire for more. Murphy recognizes Becker's teaching style as groundbreaking, unapologetic, and pure economics.

To test a model of rational addiction, we examine whether lower past and future prices for cigarettes raise current cigarette consumption. The empirical results tend to support the implication of addictive behavior that cross price effects are negative and that long-run responses exceed short-run responses. Since the long-run price elasticity of demand is almost twice as large as the short-run price elasticity, the long-run increase in tax revenue from an increase in the federal excise tax on cigarettes is considerably smaller than the short-run increase.