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...

Does internet use trigger sex crime? We use unique Norwegian data on crime and internet adoption to shed light on this question. A public program with limited funding rolled out broadband access points in 2000-2008, and provides plausibly exogenous variation in internet use. Our instrumental...

Does internet use trigger sex crime? We use unique Norwegian data on crime and internet adoption to shed light on this question. A public program with limited funding rolled out broadband access points in 2000-2008, and provides plausibly exogenous variation in internet use. Our instrumental...

Using Bulgarian Integrated Household Surveys for 1995, 1997 and 2001 this paper explores determinants of labor force status – not working, public sector employment, private sector employment and self-employment – and earnings for each of the three employment sectors. We find that while...

The labor supply effects of becoming a grandmother are not well established in the empirical literature. We estimate the effect of becoming a grandmother on the labor supply decision of older workers. Under the assumption that grandmothers cannot predict the exact date of conception of their...

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...