We introduce the concept of cooperative substitutes and complements, and use it to throw light on the conditions for a research joint venture to choose equal levels of R&D by all member firms. We show that the second-order conditions for a symmetric optimum take a particularly simple form,...

We introduce the concept of cooperative substitutes and complements, and use it to throw light on the conditions for a research joint venture to choose equal levels of R&D by all member firms. We show that the second-order conditions for a symmetric optimum take a particularly simple form,...

This paper examines the free-market and socially-optimal outcomes in a dynamic oligopoly model with R&D spillovers. First-best optimal subsidies to R&D are higher when firms play strategically against each other, but lower when they cooperate on R&D (at least with high spillovers) and when they...

We introduce the concept of cooperative substitutes and complements, and use it to throw light on the conditions for a research joint venture to choose equal levels of R&D by all member firms. We show that the second-order conditions for a symmetric optimum take a particularly simple form,...

This paper investigates the impact of ownership structure on the productivity performance of Russian industrial enterprises. The analysis compares the effects of several types of new private owners - insiders (managers and other employees) and outsiders (individual and institutional investors) -...

We construct and analyze a unique database with 1992-99 information on privatization transactions and labor productivity for the entire surviving population of initially state-owned industrial corporations in Romania. The data permit us to describe the post-privatization ownership structure and...

Why have economic reforms aimed at reducing the role of the state been successful in some cases but not others? Are reform failures the consequence of leviathan states that hinder private economic activity, or of weak states unable to implement policies effectively and provide a supportive...

We analyze the effects of privatization on firm-level wages and employment in four transition economies. Contrary to workers' fears, our fixed effect and random trend estimates imply little effect of domestic privatization, except for a slight negative effect in Russia, and they provide some...

This paper estimates the effects of privatization on worker separations and wages using retrospective data from a national probability sample of Ukrainian households. Detailed worker characteristics are used to control for compositional differences and to assess types of observable 'winners' and...