Simon Wiederhold

KU Eichstätt-Ingolstadt
Department of Business Administration and Economic
Auf der Schanz 49
85049 Ingolstadt

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NBER Working Papers and Publications

September 2016Coping with Change: International Differences in the Returns to Skills
with Eric A. Hanushek, Guido Schwerdt, Ludger Woessmann: w22657
Expanded international data from the PIAAC survey of adult skills allow us to analyze potential sources of the cross-country variation of comparably estimated labor-market returns to skills in a more diverse set of 32 countries. Returns to skills are systematically larger in countries that have grown faster in the recent past, consistent with models where skills are particularly important for adaptation to dynamic economic change.

Published: Hanushek, Eric A. & Schwerdt, Guido & Wiederhold, Simon & Woessmann, Ludger, 2017. "Coping with change: International differences in the returns to skills," Economics Letters, Elsevier, vol. 153(C), pages 15-19. citation courtesy of

December 2014The Value of Smarter Teachers: International Evidence on Teacher Cognitive Skills and Student Performance
with Eric A. Hanushek, Marc Piopiunik: w20727
International differences in teacher quality are commonly hypothesized to be a key determinant of the large international student performance gaps, but lack of consistent quality measures has precluded testing this. Using unique assessment data, we construct country-level measures of teacher cognitive skills. We find substantial differences in teacher cognitive skills across countries, and these are strongly related to student performance. Results are supported by fixed-effects estimation exploiting within-country between-subject variation in teacher skills. A series of robustness and placebo tests indicate a systematic influence of teacher skills as distinct from overall differences among countries in the level of cognitive skills. Moreover, observed country variations in teacher cognitiv...
December 2013Returns to Skills around the World: Evidence from PIAAC
with Eric A. Hanushek, Guido Schwerdt, Ludger Woessmann: w19762
Existing estimates of the labor-market returns to human capital give a distorted picture of the role of skills across different economies. International comparisons of earnings analyses rely almost exclusively on school attainment measures of human capital, and evidence incorporating direct measures of cognitive skills is mostly restricted to early-career workers in the United States. Analysis of the new PIAAC survey of adult skills over the full lifecycle in 22 countries shows that the focus on early-career earnings leads to underestimating the lifetime returns to skills by about one quarter. On average, a one-standard- deviation increase in numeracy skills is associated with an 18 percent wage increase among prime-age workers. But this masks considerable heterogeneity across countrie...

Published: Hanushek, Eric A. & Schwerdt, Guido & Wiederhold, Simon & Woessmann, Ludger, 2015. "Returns to skills around the world: Evidence from PIAAC," European Economic Review, Elsevier, vol. 73(C), pages 103-130. citation courtesy of

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