This paper presents a dynamic North-South general-equilibrium model where households have non-homothetic preferences. Innovation takes place in a rich North while norms in a poor South imitate products manufactured in North. Introducing non-homothetic preferences delivers a complete...

This paper presents a dynamic North-South general-equilibrium model where households have non-homothetic preferences. Innovation takes place in a rich North while firms in a poor South imitate products manufactured in North. Introducing non-homothetic preferences delivers a complete...

We study a model of growth and mass production. Firms undertake either product innovations that introduce new luxury goods for the rich; or process innovations that transform existing luxuries into mass products for the poor. A prototypical example for such a product cycle is the automobile....

We study a model of endogenous growth where firms invest both in product and process innovations. Product innovations (that open up completely new product lines) satisfy the advanced wants of the rich. Subsequent process innovations (that decrease costs per unit of quality) transform the...