The typical identification strategy in aid effectiveness studies assumes donor motives do not influence the impact of aid on growth. We call this homogeneity assumption into question, first constructing a model in which donor motives matter and then testing the assumption empirically.

In this essay I review Sylvia Nasar's long awaited new history of economics, Grand Pursuit. I describe how the book is an economic history of the period from 1850-1950, with distinguished economists' stories inserted in appropriate places. Nasar's goal is to show how economists work, but also to...

This paper provides a simple matching model in which unemployed workers and employers in large firms can be matched together through social networks or through more "formal" methods of search. We show that networks do not necessarily add new externalities and that some results previously...

After having been ignored for a long time by economists, happiness is becoming an object of serious research in 21st century economics. In Section 2 we sketch the present status of happiness economics. In Section 3 we consider the practical applicability of happiness economics, retaining the...

Business groups, which are ubiquitous in emerging market economies, balance the advantages of characteristics such as internal capital markets with the disadvantages such as inefficient internal distribution of resources and suppression of technological and other forms of innovativeness. In this...

Lower fertility can translate into a more male-biased sex ratio if son preference is persistent and technology for sex-selection is easily accessible. This paper investigates whether financial incentives can overcome this trade-off in the context of an Indian scheme, Devirupak, that seeks to...