This paper addresses two puzzles in international trade, namely why traditional estimates of income elasticities of exports are implausibly high and why export growth varies much more markedly across countries than can be explained by changes in price competitiveness and variations in income...

We stress some efficiency aspects of monopolistic competition justifying it on account of its tendency to innovate and the questionable excess capacity paradigm. Some further efficiency aspects revealed are product variety and transaction cost savings. We view the monopolistically competitive...

The interaction between trade liberalisation, product and process innovation, and relative skill demand is analysed in a model of international oligopoly. Lower trading barriers increase the degree of foreign competition. The competing enterprises respond by investing more aggres- sively in...