EQUITY AND EFFECTIVENESS OF POSSIBLE CO2 TREATY PROPOSALS

The Montreal Protocol on chlorofluorocarbon control established an important precedent for global environmental treaties that include both developing countries and industrial countries. This paper evaluates seven possible treaty proposals to control carbon dioxide (CO₂) emissions. Growth-rate control proposals fail on effectiveness of control or on equity differences between developing countries and industrial countries. Complex proposals link policies in population growth, economic development, world energy taxation, and forestation. These complex proposals, which appear to be both effective and equitable, can defer or avoid CO2 doubling.     

CAPITAL–LABOUR SUBSTITUTION AND ENDOGENOUS FLUCTUATIONS: A MONOPOLISTIC COMPETITION APPROACH WITH VARIABLE MARKUP*

This paper analyses an overlapping generations model with endogenous product diversity where strategic interactions between producers are introduced; it examines how they affect the stability properties of the steady state. Because of free entry, strategic interactions between producers imply a new dynamic feature, markup variability, promoting indeterminacy and endogenous cycles. Indeed, in contrast to the model without strategic interaction, endogenous fluctuations can occur when the substitution between the production factors, capital and labour, is not too weak, but in accordance with empirical estimates.     

Asymmetric Information,Managerial Opportunism,Financing, and Payout Policies

We examine corporate issuance and payout policies in the presence of both adverse selection (in capital markets) and managerial opportunism. Our results establish the importance of the locus of decision control in the firm. When shareholders determine policies, debt financing is always optimal in the presence of either adverse selection or managerial opportunism. However, when both of these problems are simultaneously present, equity issuance can become an optimal signaling mechanism. Shareholders' most preferred signaling mechanism is restricting dividends, followed by equity financing, and finally underpricing securities. When managers determine policies, a reversed hierarchy may be obtained.