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Buyer Power and the Effect of Vertical Integration on Innovation

Our article investigates the impact of vertical integration (without foreclosure) on innovation. We compare cases where either (i) two manufacturers or (ii) a manufacturer and a vertically integrated retailer invest. Then, the independent manufacturer(s) and the retailer bargain over nonlinear contracts before selling to consumers. We show that vertical integration always increases the incentives to ...

Education Bias in Probability-Based Surveys in Germany: Evidence and Possible Solutions

This paper outlines two studies on education bias in German probability-based surveys. Study 1 reviews data from 67 surveys across 19 survey programs conducted in Germany from 2000 to 2023. We found a consistent underrepresentation of individuals with a low level of formal education. We also found that the transition to self-administered modes due to rising survey costs may exacerbate this bias in ...

Provider Effects in Antibiotic Prescribing: Evidence from Physician Exits

In the fight against antibiotic resistance, reducing antibiotic consumption while preserving healthcare quality presents a critical health policy challenge. We investigate the role of practice styles in patients’ antibiotic intake using exogenous variation in patient-physician assignment. Practice style heterogeneity explains 49% of the differences in overall antibiotic use and 83% of the differences ...

Nonadditivity of Subjective Expectations over Different Time Intervals

We examine the additivity of expectations over different time intervals. For example, when asked about 10-year stock price growth, survey respondents report an expected change that is not equal to, but closer to zero than, the sum of their expectations over two shorter time intervals that cover the same 10 years. Such subadditivity, which we also find in expectations for other economic variables, is ...

The Early Bird Gets the Germs? The Impact of Early Daycare Attendance on Children’s Health

In recent decades, the share of very young children in daycare has significantly increased in many OECD countries, including Germany. Despite the critical role of child health in development and later life success, the impact of early daycare attendance on health has received little attention in the economic literature. This study examines the effects of a substantial daycare expansion in Germany on ...

Split Between Accelerationists, Pivoters, and the Unwavering: CEE Energy Policy Responses to Russia’s 2022 Invasion

Dynamic Networks of Social Contact, Social Desire, and Affect Across Time Scales

Social relationships are central to well-being because they fulfill social affiliation needs. To explain how social needs are regulated, theories describe daily-life processes among social desire, social contact, and affect. Still, these processes remain empirically underexplored because of their complexity. In this study, we estimated multivariate associations of social desire and affect with social ...

Utilisation of Reactive Ionic Liquids for Energy Storage and Regulation of the Power Grid

Chlorine is an essential feedstock for polymers and pharmaceuticals, with annual production exceeding 100 Mt. Nearly all Cl2 is obtained by chlor–alkali electrolysis, which consumes about 2.58 MWh of electricity per tonne. Renewable energies such as wind and solar would lower CO2 emissions, but electrolysers would then have to adopt to fluctuating, renewable energies while downstream processes still ...

Pre- and Post-Migration Determinants of Self-Rated Health Among Ukrainian Refugees In Germany: A Cross-Sectional Comparative Analysis with Recently Arrived Refugees from Other Countries of Origin

6.5 million Ukrainian refugees have been displaced globally since 2022, with one million who registered for temporary protection in Germany under the EU Tempo¬rary Protection Directive. Unlike other refugee groups, they were granted immediate access to social security and health care. However, little is known about the differences in health determinants for individuals arriving under the EU Temporary ...

Who Is AI Replacing? The Impact of Generative AI on Online Freelancing Platforms

This paper studies the impact of generative artificial intelligence (AI) technologies on the demand for online freelancers using a large data set from a leading global freelancing platform. We identify the types of jobs that are more affected by generative AI and quantify the magnitude of the heterogeneous impact. Our findings indicate a 21% decrease in the number of job posts for automation-prone ...