In the context of a vertically differentiated duopoly model with endogenous quality choice, we analyzes the welfare effect of overlapping ownership when the market is fully covered. The results show that overlapping ownership, while detrimental for consumer surplus, may increase or decrease...

This paper presents a new method to clarify intergenerational effects of the demographic change in industrialized countries, i.e., the trend of aging. Recognized effects of aging are twofold; a disincentive effect and a product variety effect. The results are consistent with the empirical...

We develop a dynamic model of monopolistic competition which sheds light on how the interplay between the degree of product differentiation and intertemporal elasticity of substitution affects the steady-state equilibrium. Consumers love variety and split their labor endowment between wage...

We incorporate a wage bargaining structure in a dynamic general equilibrium model and show how this feature changes short and long-run properties of equilibria compared with a perfectly competitive setting. We discuss how employment, capital, and income shares respond to wage setting shocks and...