Achim Ahrens
aahrens.bsky.social
Achim Ahrens
@aahrens.bsky.social
Senior Researcher, @immigrationlab.bsky.social, ETH Zurich | AP CERGE-EI from Sept '25 | Software: http://statalasso.github.io | Applied econometrics, ML, migration, labour | https://achimahrens.de/
5 - Focusing again on Switzerland, we find that higher social assistance reduces criminal charges, especially for petty crimes and drug offenses.

WP: papers.ssrn.com/sol3/papers....
November 27, 2024 at 9:04 AM
4 - What is the effect of cash assistance on the socio-economic integration of vulnerable Venezuelans living in Peru? We evaluate a cash-based intervention implemented by IOM and partners.

Published World Development: doi.org/10.1016/j.wo...
November 27, 2024 at 9:04 AM
3 - Double Machine Learning (DML) has become hugely popular for estimating structural parameters using ML. We highlight the risk of employing ill-suited machine learners and show the benefits of pairing DML with model averaging. With R & Stata software.

Accepted @ JAE: arxiv.org/pdf/2401.01645
November 27, 2024 at 9:04 AM
2 - Linking the labor market restrictions faced by refugees in Switzerland to the literature on outside options, we find that restricting refugees' outside options reduces job-to-job mobility and refugees' wages, widening the wage gap to natives in similar jobs.

WP: osf.io/preprints/so...
November 27, 2024 at 9:04 AM
1 - How can we encourage eligible immigrants to naturalize? We design and field a policy tree for a letter-based information campaign. The policy tree optimally selects between alternative encouragement letters.

Forthcoming JAE: doi.org/10.1002/jae....
November 27, 2024 at 9:04 AM