Embedding consumer experimentation with a product or service into a market environment, we find that unregulated contracts induce too few returns or cancella tions, as they do not internalize a pecuniary externality on other firms in the market. Forcing firms to let consumers learn longer by...

We consider an economy where production generates externalities, which can be reduced by additional firm level expenditures. This requires firms to raise outside financing, leading to deadweight loss due to a standard agency problem vis-à-vis outside investors. Policy is constrained as firms...

In markets as diverse as that for specialized industrial equipment or that for retail financial services, sellers or intermediaries may earn profits both from the sale of products and from the provision of pre-sale consultation services. We study how a seller optimally chooses the costly quality...

Using personal data collected on the internet, fi?rms and political campaigners are able to tailor their communication to the preferences and orientations of individual consumers and voters, a practice known as hypertargeting. This paper models hypertargeting as selective disclosure of...