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DIW Weekly Report 1/2 / 2026
Over the past 150 years, living space consumption has increased significantly—in Germany from less than half a room to almost two rooms per capita. The average living space per person more than doubled between 1956 and 2024, reaching 49.2 square meters. Rising incomes enabled the construction of ever larger dwellings which led to improved living conditions. Today, the majority of people live in spacious ...
2026| Konstantin A. Kholodilin, Sebastian Kohl
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Refereed essays Web of Science
Health and well‐being in the family context can be affected by care giving arrangements. Following parental care and daycare, grandparents are the third most important care givers for children in many Western societies. Despite the relevance of grandparental care, there is little evidence on the causal effects of this care mode on the next generations' health and well‐being. In this paper, we fill ...
In:
Health Economics
(2026), im Ersch. [online first: 2025-12-17]
| Mara Barschkett, C. Katharina Spiess, Elena Ziege
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Refereed essays Web of Science
The transition to decarbonized energy systems has fueled a controversial debate over the necessity of traditional ‘‘baseload’’ power. Skepticism remains regarding the reliability and economic feasibility of power systems relying mainly on cheap variable renewable energy (VRE) sources. Addressing this, the German Academies’ project ‘‘Energy Systems of the Future’’ (ESYS) analyzed the role of baseload ...
In:
Cell Reports Physical Science
7 (2026), 1, 103050, 6 S.
| Anke Weidlich, Philipp Stöcker, Karen Pittel, Christoph Luderer, Frank-Detlef Drake, Berit Erlach, Manfred Fischedick, Jutta Hanson, Hans-Martin Henning, Wilhelm Kiewitt, Jochen Kreusel, Albert Moser, Wolfram Münch, Albrecht Reuter, Dirk Uwe Sauer, Wolf-Peter Schill, Frank Sensfuß, Hartmut Spliethoff, Cyril Stephanos, Christoph Weber, Sven Wurbs
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Zeitungs- und Blogbeiträge
In:
VoxEU.org
(17.12.2025), [Online-Artikel]
| Dominik Boddin, Thilo Kroeger
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Refereed essays Web of Science
This paper estimates child penalties in labour-market-relevant cognitive skills, such as numeracy but also literacy and problem-solving competencies. We use international PIAAC data and adapt a pseudo-panel approach to a single cross-section covering 29 countries. Numeracy scores, which are associated with the largest returns to skills and pronounced gender differences, decline by 0.11 standard deviations ...
In:
European Economic Review
184 (2026), 105245, 18 S.
| Jonas Jessen, Lavinia Kinne, Michele Battisti
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Brown Bag Seminar Industrial Economics
Risky decisions in organizations may be distorted away from profit maximization if managers care about their reputation, i.e., public perceptions of their ability. Because reputation is hard to measure, documenting such distortions is difficult in most contexts. We provide evidence that the decision making of head coaches in the National Football League (NFL) is distorted by reputation concerns....
21.01.2026| Hannes Ullrich, DIW Berlin
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Refereed essays Web of Science
Objective: To develop a typology of relationship quality for nuclear and extended family relations of younger adults in the United States, accounting for variation across kinship types and racial/ethnic groups. Background: Existing typologies of family relationships primarily focus on nuclear ties, often neglecting relations with extended kin. Ties to extended kin are, however, central to many people's ...
In:
Journal of Marriage and Family
(2025), im Ersch. [online first: 2025-06-30]
| Bettina Hünteler, Karsten Hank, Diego Alburez-Gutierrez, Thomas Leopold
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Externe Working Papers
The present study identifies and compares typical classes of relationship qualities in the nuclear and extended family ties of younger adults across nine European countries (Germany, Italy, the Netherlands, Poland, the United Kingdom, as well as the Nordic countries Denmark, Finland, Norway, and Sweden). We used KINMATRIX data that were collected online in 2022-23 from an ego-centric perspective of ...
Washington DC:
OSF,
2025,
36 S.
(SocArXiv Preprint)
| Bettina Hünteler, Karsten Hank, Diego Alburez-Gutierrez, Thomas Leopold
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Personnel news
Last week, SOEP celebrated Jürgen Schupp and his forthcoming (at the end of the year) retirement. During the ceremony, he humorously referred to himself as SOEP's “dinosaur.”
During his 41 years at DIW Berlin, he initially worked as a research assistant, then as the survey manager in the infrastructure unit. Subsequently, he was its director for many years. His impressive career as a researcher was ...
20.12.2025
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Infographic
19.12.2025