Concentration and price-cost margins have increased since the 1980s in many industries. These developments have raised concern about weakened competition and resulting harm to consumers and the need for tougher antitrust enforcement. In 1973 Harold Demsetz cautioned against inferring weakened...

This paper documents new facts about the joint evolution of firm performance and prices in international markets and proposes a theory of firm dynamics emphasizing the interaction between learning about demand and quality choice to explain the observed patterns. Using data from the Portuguese...

While there is considerable empirical evidence on the impact of liberalizing trade in goods, the effects of services liberalization have not been empirically established. Using firm-level data from the Czech Republic for the period 1998-2003, this study examines the link between services sector...