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Observing Many Researchers Using the Same Data and Hypothesis Reveals a Hidden Universe of Uncertainty

This study explores how researchers’ analytical choices affect the reliability of scientific findings. Most discussions of reliability problems in science focus on systematic biases. We broaden the lens to emphasize the idiosyncrasy of conscious and unconscious decisions that researchers make during data analysis. We coordinated 161 researchers in 73 research teams and observed their research decisions ...

Culture, Children and Couple Gender Inequality

This paper examines how culture impacts within-couple gender inequality. Exploiting thesetting of Germany’s division and reunification, I compare child penalties of East Germans whowere socialised in a more gender egalitarian culture to West Germans socialised in a gendertraditionalculture. Using a household panel, I show that the long-run child penalty on thefemale income share is 23.9 percentage ...

Jana Hamdan has successfully defended her dissertation

Jana Hamdan has successfully defended her dissertation "Essays on the Impact of Behavioral Aspects and Education for Financial Development" supervised by Lukas Menkhoff (1st supervisor) and Georg Weizsäcker (2nd supervisor) at Humboldt-Universität zu Berlin. Congratulations!

How Shocks Affect Stock Market Participation

While there is a broad consensus in the literature that stock ownership is associated with individual characteristics, such as wealth, income, risk preferences, and financial literacy, less is known about the dynamics of stock market participation (SMP). Major fluctuations in SMP are oftentimes related to political events, economic shocks, and technological disruptions. We discuss the literature that ...

How Shocks Affect Stock Market Participation

While there is a broad consensus in the literature that stock ownership is associated with individual characteristics, such as wealth, income, risk preferences, and financial literacy, less is known about the dynamics of stock market participation (SMP). Major fluctuations in SMP are oftentimes related to political events, economic shocks, and technological disruptions. We discuss the literature...

Official Data on Investments in Environmental Protection: Data Documentation (2005 - 2016)

Parental Leave Policy and Long-run Earnings of Mothers

Paid parental leave schemes have been shown to increase women’s employment rates but to decrease their wages in case of extended leave duration. In view of these potential trade-offs, many countries are discussing the optimal design of parental leave policies. We analyze the impact of a major parental leave reform on mothers’ long-term earnings. The 2007 German parental leave reform replaced a means-tested ...

Individual and Contextual Correlates of Charitable Giving to Refugees in Germany

Diese Dissertation untersucht das Ausmaß der Spendenbereitschaft für Flüchtlinge und dessen individuelle sowie kontextuelle Korrelate unter einheimischen Deutschen zwischen Jahren 2015 und 2018. Die Dissertation enthält drei originäre empirische Beiträge. Im ersten empirischen Beitrag wird das Ausmaß des Spendenverhaltens für Flüchtlinge, seine regionale Variation und Veränderung im Zeitverlauf beschrieben. ...

Today’s Older Adults Are Cognitively Fitter Than Older Adults Were 20 Years Ago, but When and How They Decline Is No Different Than in the Past

History-graded increases in older adults’ levels of cognitive performance are well documented, but little is known about historical shifts in within-person change: cognitive decline and onset of decline. We combined harmonized perceptual motor speed data from independent samples recruited in 1990 and 2010 to obtain 2,008 age-matched longitudinal observations (M = 78 years, 50% women) from 228 participants ...

Economic sanctions: Coalitions increase the cost for the target and reduce own burden

What is the role of coalitions in enforcing sanctions? In a newly released study, researchers at IfW Kiel and DIW Berlin analyse the economic impact of jointly implementing punitive measures in the context of the 2012 Iran and 2014 Russia sanctions. They find that coalitions serve two crucial purposes -- they not only magnify the economic cost imposed on the target but also reduce domestic costs for ...