In an economy with voluntarily provided public goods and private product varieties, and a general class of CES preferences, it is shown that aggregate public good contribution follows an inverted-U pattern with respect to group size when private and public goods are substitutable in preferences....

This work incorporates the idea that the protection of intellectual property rights may hinder the free flow of scientific knowledge from innovations in a standard endogenous growth model and finds that stronger protection of intellectual property rights may discourage innovation.

This paper presents a modified version of the North-South endogenous imitation model of Grossman and Helpman [Grossman, G., Helpman, E., 1991b. Endogenous product cycles. The Economic Journal 101, 1241-1229] based on the product variety framework. We show that a tighter Intellectual Property...

A dynamic North - South general equilibrium model of international product cycle is presented in this paper. The qualitative effects of strengthening intellectual property rights (IPR) on the balanced growth rate of the world economy is studied in two alternative cases: (i) imitation is direct...

We introduce perfect international labour mobility between the North and the South into the Helpman [Helpman, E., 1993. Innovation, imitation, and intellectual property rights. Econometrica 61 (6), 1247-1280] North South model. We analyse the effect of strengthening the intellectual property...