Proxy variables are often used in linear regression models with the aim of removing potential confounding bias. In this paper we formalise proxy variables within the potential outcome framework, giving conditions under which it can be shown that causal effects are nonparametrically identified....

Proxy variables are often used in linear regression models with the aim of removing potential confounding bias. In this paper we formalise proxy variables within the potential outcome framework, giving conditions under which it can be shown that causal effects are nonparametrically identified....

Using a rich and unique combined administrative-survey dataset, this paper explores how sensitive propensity score (PS) matching estimates of Active Labor Market Policies (ALMPs) based on the selection-on-observables assumption are to typically unobserved covariates. Using a sample of German...

In the first part of the paper I analyze a data set on teenage behavior. The data is a sample of high school students in the Netherlands, and contains information on teenage time use, income, expenditures, and subjective measures of well-being and self-esteem. As all students in a sampled class...

In this paper we present estimates of roommate and institution based peer effects. Using data from the College & Beyond survey, the Freshman survey, and phonebook data that allows us to identify college roommates - we estimate models of students' political persuasion and intellectual engagement....

This paper examines how the effort choices of workers within the same firm interact with each other. In contrast to the existing literature, we show that workers can affect the productivity of their co-workers based on income maximization considerations, rather than relying on behavioral...

A variety of public campaigns, including the Just Say No campaign of the 1980s and 1990s that encouraged teenagers to Just Say No to Drugs, are based on the premise that teenagers are very susceptible to peer influences. Despite this, very little is known about the effect of school peers on the...