We propose an explanation for why states choose different apportionment formulas for corporate income tax purposes. Based on a two-state equilibrium model of location choice by firms, we show that aggregate social welfare is maximized when both states use the same formula, regardless of which...

This article reviews the rapidly growing literature on structural models of complementary choices. It discusses recent modeling developments and identifies promising areas for future research. Copyright Springer Science+Business Media New York 2014

In many sectors property rights over knowledge and information are weak as they are embodied in employees, competitors can copy or customers can pirate. Yet comprehensive studies show that firms systematically invest in these assets. We offer a simple taxonomy of strategies that firms use to...

"Two aspects of media bias are important empirically. First, bias is persistent: it does not seem to disappear even when the media is under scrutiny. Second, bias is conflicting: different people often perceive bias in the same media outlet to be of opposite signs. We build a model in which both...