In 1998 the Norwegian government introduced a program that increased parents’ incentives to stay home with children under the age of three. Many eligible children had older siblings, and we investigate how this program affected long-run educational outcomes of the older siblings. Using comprehensive administrative data, we estimate a difference-in-differences model which exploits differences in...

BACKGROUND Relapse is one of the most costly aspects of schizophrenia. AIMS To compare costs, clinical outcomes and quality of life for patients who experienced relapse in schizophrenia with a control group who did not relapse. METHOD Patients were randomly selected from current psychiatric case-loads drawn from urban and suburban areas of Leicester. Differences in costs and outcomes by rel...

The purpose of this study was to examine whether matching navigation mode of a learning environment with learners’ preferred navigation mode would facilitate their learning in a web environment. Sixty-eight undergraduate students were randomly assigned to treatments (linear vs. nonlinear navigation mode) and received four criterion tests designed to measure different educational objectives imme...

in this research to evaluate the effects of probiotic on the growth and some serum biochemical parameters of growing native kid’s, 24 kid’s, with 19.2± 0.7 kg body weight and 120± 10 days of age were used in a  completely randomized design with four treatments and six repeats. these four groups included: 1- the control group was fed on a basal diet (without probiotic or yeast). 2- the second gr...

In 1998 the Norwegian government introduced a program that substantially increased parents’ incentives to stay home with children under the age of three. Many eligible children had older siblings, and we investigate how this program affected long-run educational outcomes of the older siblings. Using comprehensive administrative data, we estimate a difference-in-differences model which exploits ...

College campuses are particular causes for concern each flu season because of the close and constant proximity of community members. Limited existing research suggests that, like the general population, this subpopulation is undervaccinated, and inaccurate perception of the safety, efficacy, and necessity of the vaccine plays a large part. In this paper, we introduce a simple cost-benefit model...

We propose a difference-in-differences (DiD) approach to estimate the impact of incentives on cost reduction. We show theoretically, and estimate empirically, that German electricity distribution system operators (DSOs) incur higher costs when subject to a loweredpowered regulation mechanism. The difference is particularly significant (about 7%) for firms in the upper quartile of the efficiency...