This paper analyzes the role of network externalities and expectations about them in the formulation of trade policy. Their effects are studied in duopoly situations when products are compatible and when they are incompatible and when multimarket effects are possible. Network externalities and...

This paper develops a model of international competition in an oligopoly characterized by strong learning effects. The model is quantified by calibrating its parameters to reproduce the US-Japanese rivalry in 16K R.A.Ms from 1978-1983. We then ask the following question: how much did the...

We describe the enormous changes in social and tax policy in recent years that have encouraged work by single mothers. We document the changes in federal and state income taxes, AFDC and Food Stamp benefits, Medicaid, training and child care programs. We describe the quantitative importance of...

During 1984-96, welfare and tax policy changed dramatically. The Earned Income Tax Credit was expanded, welfare benefits were cut, welfare time limits were added and cases were terminated, Medicaid for the working poor was expanded, training programs were redirected, and subsidized or free child...

This paper examines how child maltreatment is affected by the economic circumstances of parents. 'Child maltreatment' encompasses a wide range of behaviors that adversely affect children. It includes neglect, physical abuse, sexual abuse, and other forms of abuse or neglect. Using state-level...

This paper considers the problem of policy evaluation in a modern society with heterogeneous agents and diverse groups with conflicting interests. Several different approaches to the policy evaluation problem are compared including the approach adopted in modern welfare economics, the classical...

This paper examines the economic foundations of some recently proposed criteria for evaluating the benefits of social programs. These criteria are appropriate for comparing a class of revenue-constant policies. They replace foundational principles of social opportunity costs with accounting...