Skills, Earnings, and Employment: Exploring Causality in the Estimation of Returns to Skills
Franziska Hampf, Simon Wiederhold, Ludger Woessmann
Large-scale Assessments in Education,
No. 12,
2017
Abstract
Ample evidence indicates that a person’s human capital is important for success on the labor market in terms of both wages and employment prospects. However, unlike the efforts to identify the impact of school attainment on labor-market outcomes, the literature on returns to cognitive skills has not yet provided convincing evidence that the estimated returns can be causally interpreted. Using the PIAAC Survey of Adult Skills, this paper explores several approaches that aim to address potential threats to causal identification of returns to skills, in terms of both higher wages and better employment chances. We address measurement error by exploiting the fact that PIAAC measures skills in several domains. Furthermore, we estimate instrumental-variable models that use skill variation stemming from school attainment and parental education to circumvent reverse causation. Results show a strikingly similar pattern across the diverse set of countries in our sample. In fact, the instrumental-variable estimates are consistently larger than those found in standard least-squares estimations. The same is true in two “natural experiments,” one of which exploits variation in skills from changes in compulsory-schooling laws across U.S. states. The other one identifies technologically induced variation in broadband Internet availability that gives rise to variation in ICT skills across German municipalities. Together, the results suggest that least-squares estimates may provide a lower bound of the true returns to skills in the labor market.
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Coping with Change: International Differences in the Returns to Skills
Eric A. Hanushek, Guido Schwerdt, Simon Wiederhold, Ludger Woessmann
Economics Letters,
April
2017
Abstract
International data from the PIAAC survey allow estimation of comparable labor-market returns to skills for 32 countries. Returns to skills are larger in faster growing economies, consistent with the hypothesis that skills are particularly important for adaptation to economic change.
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Durch eine Ausbildung erworbene Kompetenzen zahlen sich auf dem Arbeitsmarkt aus
Christina Langer, Jakob Peiffer, Simon Wiederhold
ifo Schnelldienst,
No. 7,
2023
Abstract
Ein Großteil der Jugendlichen in Deutschland beginnt nach der Schule eine duale Berufsausbildung. Die Inhalte dieser Berufsausbildungen und die dort vermittelten Kompetenzen sind bundesweit einheitlich in Ausbildungsplänen geregelt. Wir erfassen insgesamt mehr als 13 000 verschiedene Kompetenzen aus diesen Ausbildungsplänen, sowie deren genaue Lerndauer. Vor allem kognitive, soziale und digitale Kompetenzen, die während der Ausbildung erworben wurden, zahlen sich auf dem Arbeitsmarkt aus. Dabei steigen die Einkommenserträge höherer Kompetenzen über die Karriere hinweg an. Das zeigt unsere Analyse der Ausbildungsplandaten kombiniert mit administrativen Lohndaten des Instituts für Arbeitsmarkt- und Berufsforschung (IAB) über einen Zeitraum von insgesamt 30 Jahren. Außerdem dokumentieren wir steigende Erträge von digitalen und sozialen Kompetenzen seit den 1990er Jahren, während die Erträge von kognitiven Kompetenzen nur geringfügig zugenommen haben.
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Frühkindliche Betreuung erhöht den Arbeitsmarkterfolg von Müttern ohne Abitur
Henning Hermes, Marina Krauß, Philipp Lergetporer, Frauke Peter, Simon Wiederhold
Wirtschaft im Wandel,
No. 3,
2023
Abstract
In den meisten Ländern wirkt sich die Geburt eines Kindes negativ auf den Arbeitsmarkterfolg von Müttern aus, insbesondere bei Müttern mit niedrigerem Schulabschluss. In diesem Beitrag werden die Ergebnisse eines Feldexperiments in Deutschland vorgestellt, in dem Familien bei der Bewerbung für einen Platz in einer Kindertagesstätte (Kita) unterstützt wurden. Die Ergebnisse zeigen, dass der verbesserte Zugang zu frühkindlicher Betreuung die Wahrscheinlichkeit erhöht, dass Mütter ohne Abitur in Vollzeit arbeiten, und deren Haushaltseinkommen steigert. Um den Arbeitsmarkterfolg von Müttern zu verbessern, sollte die Politik den Zugang zu frühkindlicher Betreuung erleichtern und die Zahl der Kita-Plätze noch weiter erhöhen.
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Do Role Models Matter in Large Classes? New Evidence on Gender Match Effects in Higher Education
Stephan Maurer, Guido Schwerdt, Simon Wiederhold
IWH Discussion Papers,
No. 14,
2023
Abstract
It is well established that female students perform better when taught by female professors. However, little is known about the mechanisms explaining these gender match effects. Using administrative records from a German public university, which cover all programs and courses between 2006 and 2018, we show that gender match effects are sizable in smaller classes, but are absent in larger classes. These results suggest that direct and frequent interactions between students and professors are crucial for gender match effects to emerge. In contrast, the mere fact that one’s professor is female is not sufficient to increase performance of female students.
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Africa’s Skill Tragedy
Jan Bietenbeck, Marc Piopiunik, Simon Wiederhold
Journal of Human Resources,
No. 3,
2018
Abstract
We study the importance of teacher subject knowledge for student performance in Sub-Saharan Africa using unique international assessment data for sixth-grade students and their teachers. To circumvent bias due to unobserved student heterogeneity, we exploit variation within students across math and reading. Teacher subject knowledge has a modest impact on student performance. Exploiting vast cross-country differences in economic development, we find that teacher knowledge is effective only in more developed African countries. Results are robust to adding teacher fixed effects and accounting for potential sorting based on subject-specific factors.
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The Value of Smarter Teachers: International Evidence on Teacher Cognitive Skills and Student Performance
Eric A. Hanushek, Marc Piopiunik, Simon Wiederhold
Journal of Human Resources,
No. 4,
2019
Abstract
We construct country-level measures of teacher cognitive skills using unique assessment data for 31 countries. We find substantial differences in teacher cognitive skills across countries that 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 cognitive skills are significantly related to differences in women’s access to high-skill occupations outside teaching and to salary premiums for teachers.
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Do Smarter Teachers Make Smarter Students?
Eric A. Hanushek, Marc Piopiunik, Simon Wiederhold
Education Next,
No. 2,
2019
Abstract
Student achievement varies widely across developed countries, but the source of these differences is not well understood. One obvious candidate, and a major focus of research and policy discussions both in the United States and abroad, is teacher quality.
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The Effects of Graduating from High School in a Recession: College Investments, Skill Formation, and Labor-Market Outcomes
Franziska Hampf, Marc Piopiunik, Simon Wiederhold
CESifo Working Paper,
No. 8252,
2020
Abstract
We investigate the short- and long-term effects of economic conditions at high-school graduation as a source of exogenous variation in the labor-market opportunities of potential college entrants. Exploiting business cycle fluctuations across birth cohorts for 28 developed countries, we find that bad economic conditions at high-school graduation increase college enrollment and graduation. They also affect outcomes in later life, increasing cognitive skills and improving labor-market success. Outcomes are affected only by the economic conditions at high-school graduation, but not by those during earlier or later years. Recessions at high-school graduation narrow the gender gaps in numeracy skills and labor-market success.
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Individualism, Human Capital Formation, and Labor Market Success
Katharina Hartinger, Sven Resnjanskij, Jens Ruhose, Simon Wiederhold
CESifo Working Paper,
No. 9391,
2021
Abstract
There is an ongoing debate about the economic effects of individualism. We establish that individualism leads to better educational and labor market outcomes. Using data from the largest international adult skill assessment, we identify the effects of individualism by exploiting variation between migrants at the origin country, origin language, and person level. Migrants from more individualistic cultures have higher cognitive skills and larger skill gains over time. They also invest more in their skills over the life-cycle, as they acquire more years of schooling and are more likely to participate in adult education activities. In fact, individualism is more important in explaining adult skill formation than any other cultural trait that has been emphasized in previous literature. In the labor market, more individualistic migrants earn higher wages and are less often unemployed. We show that our results cannot be explained by selective migration or omitted origin-country variables.
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