This paper studies how spillovers between two complementary markets affect firm entry and product variety, focusing on the cell phone market and the wireless service market in the Indian mobile phone industry during the 4G rollout. We highlight that the presence of international firms in the cell phone market accelerates 4G deployment in the wireless market, which in turn affects the product...
The German Institute for Economic Research (DIW Berlin) organizes the fourth Scientific Workshop on Productivity jointly with the German Council of Economic Experts (SVR Wirtschaft) in its role as the German National Productivity Board and the Institute of Energy Economics at the University of Cologne (EWI). The workshop will take place on 24th and 25th August 2026 at DIW Berlin. The event...
The article “Public Communication and Collusion: New Screening Tools for Competition Authorities” by Tomaso Duso, Carl Kreuzberg, Joseph Harrington und Geza Sapi has won the Concurrences Antitrust Writing Award 2026 in the category “Academic Articles – Coordinated Practices.” The “Best Academic Articles Awards” recognize excellence in the fields of antitrust law and economics. In the award-winning ...
The SOEPnewsletter March 2026 is now availabe in English and German. If you would like to receive the new issues automatically by e-mail, please subscribe to the mailing list. Enjoy reading.
Extensive evidence suggests that war-related trauma negatively affects health, yet its long-term and transgenerational effects on psychological and physical adjustment remain poorly understood. This study examines whether individuals who experienced greater war exposure in early childhood—specifically variation in bombardment intensity across German municipalities during the Second World War—show lower, ...
Abstract: Electricity markets are increasingly shaped by uncertainty in residual demand due to renewable expansion. This weakens the disciplining role of forward markets and amplifies the potential for market power in spot pricing. Understanding this mechanism is essential for informed market design in the context of growing intermittency and structural transformation of energy systems.
