Network Structure of an AIDS-denialist Online Community: Identifying Core Members and the Risk Group
Sociology. SOC. Высшая школа экономики, 2016. No. 71.
Препринт # 1
Aistov A., Aleksandrova E.
Individual Returns to Training in a Russian Firm
Economics. EC. Высшая школа экономики, 2015. No. WP BRP 101/EC/2015 .
This work is devoted to estimating the individual return to worker's professional training. This empirical research is based on unique monthly data, comprised of the personnel records of workers in a Russian metallurgical enterprise between 2006--2010. Using the original time distributed difference-in-differences technique we control for the effect of workers' mobility and the ``non-parallel'' dynamics of earnings in estimates. A qualitative comparison of mobility in trained and control groups is also made by Kaplan-Meier survival curves. The main factors that distinguish this paper from others are the following. (I) We focused on the internal labour market, concluding that it has common peculiarities of wage setting concerned with training as an open labour market. (II) We show that mobility-friendly training programs give high returns, and not only in transition economies. (III) We suggest controlling for mobility by choosing a corresponding control group. (IV) We use a robust new specification that is reactive to different dynamics of the dependent variable in treated and control groups in difference-in-differences estimates. (V) We compared three different kinds of training and our conclusions could have practical application (at least in Russian context). The best way to raise personal earnings is on-the-job training. The internal mobility caused by retraining courses was the same impact on workers as if they lacked retraining. The wages of workers trained in the same field grow randomly for a few months before and after training. Nevertheless it is difficult to prove the causal effect of this kind of training on wage growth.
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