Many empirical studies specify outcomes as a linear function of endogenous regressors when conducting instrumental variable (IV) estimation. We show that tests for treatment effects, selection bias, and treatment effect heterogeneity are biased if the true relationship is non-linear. These...

This study examines the link between divorced nonresident fathers' proximity and children's long-run outcomes using high-quality data from Norwegian population registers. We follow (from birth to young adulthood) 15,992 children born into married households in Norway in the years 1975-1979 whose...

Despite a broad consensus on the need to take into account the value of public services in distributional analysis, there is little reliable evidence on how the inclusion of such non-cash income actually affects poverty and inequality estimates. In particular, the equivalence scales applied to...

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...

Advocates of a universal child care system offer a two-fold argument: Child care facilitates children's long-run development, and levels the playing field by benefiting in particular disadvantaged children. Therefore, a critical element in evaluating universal child care systems is to measure...

This paper uses a rich Norwegian dataset to re-examine the causal relationship between family income and child outcomes. Motivated by theoretical predictions and OLS results that suggest a nonlinear relationship, we depart from previous studies in allowing the marginal effects on children's...

Economies with low unemployment often have high disability rates. In Norway, the permanent disability insurance rolls outnumber registered unemployment by four to one. Based on administrative register data matched with firms' financial statements and closure data collected from bankruptcy...

In Scandinavia, the provision of health care services has been, almost entirely, the responsibility of the public health care system. However, in the last five to seven years there has been remarkable growth in the private health care market. These health care services are obtained normally...

Using Norwegian registry data we investigate how paternity leave affects fathers' long-term earnings. In 1993 Norway introduced a paternity quota of the paid parental leave. We estimate a difference-in-differences model which exploits differences in fathers' exposure to the paternity quota. Our...

We estimate peer effects for fourth graders in six European countries. The identification relies on variation across classes within schools. We argue that classes within primary schools are formed roughly randomly with respect to family background. Similar to previous studies, we find sizeable...