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Book of Condolence for Gert G. Wagner

Gert G. Wagner passed away on January 28, 2024, at the age of 71. He led the Socio-Economic Panel (SOEP) at the German Institute for Economic Research (DIW Berlin) for many years and later served as the Chairman of the Executive Board (President) of DIW Berlin. Mr. Wagner joined DIW Berlin in 1989, taking over leadership of the then-new longitudinal study, the Socio-Economic Panel (SOEP) until ...

Testing Marx: Capital Accumulation, Income Inequality, and Socialism in Late Nineteenth-Century Germany

We study the dynamics of capital accumulation, income inequality, capital concentration, and voting up to 1914. Based on new panel data for Prussian regions, we re-evaluate the famous Revisionism Debate between orthodox Marxists and their critics. We show that changes in capital accumulation led to a rise in the capital share and income inequality, as predicted by orthodox Marxists. But against their ...

Equipping the Offline Population with Internet Access in an Online Panel: Does It Make a Difference?

Online panel surveys are often criticized for their inability to cover the offline population, potentially resulting in coverage error. Previous research has demonstrated that non-internet users in fact differ from online individuals on several sociodemographic characteristics. In attempts to reduce coverage error due to missing the offline population, several probability-based online panels equip ...

Chronic Disease Onset and Wellbeing Development: Longitudinal Analysis and the Role of Healthcare Access

Background Experiencing the onset of a chronic disease is a serious health event impacting living conditions and wellbeing. Investigating wellbeing development and its predictors is crucial to understand how individuals adapt to chronic illnesses. This study (i) analyzed the impact of a chronic disease on wellbeing development, and (ii) explored spatial healthcare access as potential moderating factor. ...

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 non-linear contracts before selling to consumers. We show that vertical integration always increases the incentives ...

Decline in Nominal Construction Volume Expected for the First Time since the Financial Crisis; Residential Construction Situation Worsening

High construction prices and worsened financing conditions are weighing on the construction industry, especially build-ing construction. Despite a nominal increase of six percent in construction expenses in 2023, it decreased by just over one percent in inflation-adjusted terms. In 2024, the nominal construction volume is likely to contract by around 3.5 percent, declining for the first time since ...

The 17th Berlin IO Day

The Berlin IO Day is a one-day workshop sponsored by the Berlin Centre for Consumer Policies (BCCP) and supported by the Berlin's leading academic institutions, including DIW Berlin, ESMT Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, and Technische Universität Berlin. The aim is to create an international forum for high quality research in Industrial Organization in the heart...

Stabilized Benders Decomposition for Energy Planning under Climate Uncertainty

Financial Incentives and Labor Force Participation of Older Workers: Evidence from France

This paper estimates the impact of financial incentives on retirement decision in France for cohorts of men retiring between 1994 to 2012. During these two decades, a number of pension reforms took place, all aiming to achieve financial balance in the context of increasing life expectancy. These reforms strengthened incentives to retire later, either by ofoffering increased pension benefit for later ...

Top-level research on wealth inequality at SOEP: ERC Consolidator Grant awarded to Philipp Lersch

SOEP Senior Research Fellow Philipp Lersch was granted one of the highest endowed research grants of the European Commission, the European Research Council (ERC) Consolidator Grant. He successfully competed with his project “WEALTHTRAJECT: Understanding Trajectories of Wealth Accumulation and Their Variability.” From December 2024, the project will receive approximately two million Euros over the next ...