Before revision: We study the effect of the introduction of university tuition fees on the enrollment behavior of students in Germany. For this, an appropriate Lasso-technique is crucial in order to identify the magnitude and significance of the effect due to potentially many relevant controlling factors and only a short time frame where fees existed.
After revision: We study the effect of the introduction of university tuition fees on the enrollment behavior of students during the years 2006-2014. In particular, we show how the variation in the introduction scheme across states and times can be exploited to identify the magnitude and significance of the effect due to potentially many relevant controlling factors and only a short time frame where fees existed.