international PISA test (2009). We extend the analyses in two ways and find that students must differ considerably in the time …

This paper examines how exposure to students identified as gifted (IQ ≥ 130) affects achievement in secondary school … combined with psychological examination records, we study the causal impact of gifted students on their classmates in … unprecedented detail. We find a positive and significant effect of the exposure to gifted students on school achievement in both …

-selected students as participants. This is potentially problematic as students participating in experiments may behave systematically … different than non-participating students or non-students. In this paper we empirically investigate whether laboratory … experiments with student samples misrepresent the importance of social preferences. Our first study shows that students who …

We investigate the impact of the presence of university dropouts on the academic success of first-time students. Our … of dropouts on first-time students' success masks treatment heterogeneity and non-linearities. First, we find negative …

using a large survey linked to administrative student register data. Exploiting cross sectional variation in students' self …-reported grit in the last year of compulsory school, we find that an increase in students' grit is associated with a higher … cognitive skill measures and a comprehensive set of other students' background characteristics. Moreover, using novel data on …