We study the mental health of PhD students in Sweden using comprehensive administrative data on prescriptions, specialist care visits, hospitalizations, and causes of death. We find about 7% (5%) of PhD students receive medication or diagnosis for depression (anxiety) in a given year. These...

Media firms sometimes allow consumers to pay to remove advertisements from an advertisement-based product. We formally examine an ad-based monopolist s incentives to introduce this option. When deciding whether to introduce the option to pay, the monopolist compares the potential direct revenues...

This paper studies an industry where firms can choose to provide open or closed platforms. Open, as opposed to closed, platforms are extendable so that third-party producers can develop extensions for them. Building on a two-sided market model, I show that firms might prefer to commit to keeping...

Private firms may not have efficient incentives to allow third-party producers to access their platform or develop extensions for their products. Based on a two-sided market model, I discuss two reasons for why. First, a private firm may not be able to internalize all benefits from cross-group...

Private equity buyouts have become a common element in the industrial development process. I survey the literature on the real economic effect of buyouts: employment, wages, productivity, and long-run investments. Employment tend to marginally fall after a buyout in most countries studied, with...

I study the internal organization of firms using occupation data on workers in Swedish manufacturing firms. Firms with more layers are larger in size, in value added, and they pay higher wages. Firms are hierarchal in that lower layers have more workers and lower mean wage than higher layers....