Disclosure of lobbying activity has become much more timely and stringent in the US, and many demand similar regulation also for lobbying in the European Union. Disclosure informs voters about a lobbyist’s activity, but it also informs rival lobbying groups, with strategic consequences. Under...

Increasingly, lobbying groups are subject to transparency requirements, obliging them to provide detailed information about their business. We study the effect this transparency policy has on the nature of lobbying competition. Under mild conditions, mandated transparency leads to an increase in...

I develop a formal model of political campaigns in which candidates choose how to distribute their resources over two different policy issues. I assume that campaigning on an issue has two simultaneous effects, both rooted in social and cognitive psychology: It increases the perceived quality of...

For many years now, the Internet seemed to be open, free, and competitive. Internet entrepreneurialism was high, financing easy, entry barriers low. But now, in the wake of the Internet's bursting bubble, the reality of that competitiveness deserves a second look: Is the Internet still as open...

This paper (1) presents a general model of online price competition, (2) shows how to structurally estimate the underlying parameters of the model when the number of competing firms is unknown or in dispute, (3) estimates these parameters based on UK data for personal digital assistants, and (4)...