https://refubium.fu-berlin.de/handle/fub188/46135 2026-04-28T21:00:52Z 2026-04-28T21:00:52Z Coleman, Winnie Nautz, Dieter https://refubium.fu-berlin.de/handle/fub188/46130 2025-01-09T02:04:30Z 2025-01-01T00:00:00Z

Asymmetric Inflation Target Credibility Coleman, Winnie; Nautz, Dieter This paper investigates the determinants of inflation target credibility (ITC) using a unique survey we designed to measure the credibility of the ECB’s inflation target. Containing over 200,000 responses from German consumers collected between January 2019 and November 2024, our dataset enables us to estimate the effect of both positive and negative deviations of inflation from the 2% target on ITC. In contrast to the symmetry of the ECB’s inflation target, we find that ITC is asymmetric, i.e. consumers respond significantly and plausibly signed to target deviations only when inflation is above target. When inflation is below target, however, the credibility of the inflation target cannot be improved by raising the inflation rate to close the gap.

2025-01-01T00:00:00Z Deparade, Darius Jarmolinski, Lennart Mohr, Peter N.C. https://refubium.fu-berlin.de/handle/fub188/47703 2025-05-21T01:04:32Z 2025-01-01T00:00:00Z

Behavioral interventions, tax compliance and consequences on inequality Deparade, Darius; Jarmolinski, Lennart; Mohr, Peter N.C. Tax evasion is associated with high social and fiscal costs. To address these, many governments employ behavioral interventions given their low implementation costs and high potential efficiency. Although many studies report positive effects of behavioral interventions to combat tax evasion, the effect sizes are often quite small. This may result from the partial cancellation of heterogeneous effects and prompts calls in the literature for individualized or group-tailored interventions. While classification approaches for taxpayer types exist, their practical implementation is limited by data availability. We systematically review 144 studies conducted between 1996 and 2024 and show that grouptailored interventions along key inequality dimensions—gender, income, age, and regionality—may not only enhance tax compliance but also help address inequality. Furthermore, our heterogeneity analysis shows that intervention effectiveness can be enhanced by the incorporation of specific characteristics related to framing, intervention frequency, and communication channels. Finally, we present a theoretical model to support group-tailored interventions and thus provide policymakers with an efficient strategy to combat tax evasion.

2025-01-01T00:00:00Z Ugur, Firdevs Kari, Arthur Gersch, Martin https://refubium.fu-berlin.de/handle/fub188/50523 2025-12-09T02:05:17Z 2025-01-01T00:00:00Z

Datenräume in der digitalen Pflege Ugur, Firdevs; Kari, Arthur; Gersch, Martin Die Arbeit entwickelt eine Architektur für einen EHDS-konformen Datenraum, der sektorübergreifende Forschungsdatenkooperationen im Gesundheitswesen unterstützt. Ausgangspunkt ist die Analyse rechtlicher, organisatorischer und technischer Anforderungen an Datennutzung und -austausch, die im Kontext fragmentierter IT-Landschaften, heterogener Prozesse und datenschutzrechtlicher Unsicherheiten besondere Bedeutung haben. Methodisch folgt die Arbeit dem Ansatz des Action Design Research und verbindet theoretische Meta- Anforderungen mit empirischen Erkenntnissen aus Interviews und Workshops im Projekt CaringS. Ergebnis ist ein Wegweiser, der Konsortien in fünf Phasen von der gemeinsamen Vision über die Identifikation relevanter Datenquellen und Fragen der Data-Governance bis zur technischen Architektur und langfristigen Nutzung begleitet. Wissenschaftlich leistet die Arbeit einen Beitrag zur Entwicklung von Gestaltungsprinzipien für Datenräume, die Zielkonflikte zwischen Generalisierbarkeit und Praxistauglichkeit sichtbar machen. Praktisch stellt sie ein anwendbares Instrument bereit, das EHDS-Vorgaben in konkrete Arbeitsschritte übersetzt und so Forschung und Versorgung verbindet.; The starting point is an analysis of the legal, organizational, and technical requirements for data use and exchange, which are particularly important in the context of fragmented IT landscapes, heterogeneous processes, and uncertainties regarding data protection laws. Methodologically, the work follows the action design research approach and combines theoretical meta-requirements with empirical findings from interviews and workshops in the CaringS project. The result is a guide that accompanies consortia through five phases, from a shared vision to the identification of relevant data sources and data governance issues to technical architecture and long-term use. Scientifically, the work contributes to the development of design principles for data spaces that highlight conflicts of interest between generalizability and practicality. In practical terms, it provides an applicable tool that translates EHDS requirements into concrete work steps, thus linking research and healthcare.

2025-01-01T00:00:00Z Prummer, Anja Nava, Francesco https://refubium.fu-berlin.de/handle/fub188/48290 2025-07-23T01:04:27Z 2025-01-01T00:00:00Z

Divisive by design Prummer, Anja; Nava, Francesco We study a principal who allocates a good to agents with private, independently distributed values through an optimal mechanism. The principal can strategically shape these value distributions by modifying the good’s features, which affect agents’ valuations. Our analysis reveals that optimal designs are frequently divisive—creating goods that appeal strongly to specific agents or agent types while being less valued by others. These divisive designs reduce information rents and increase total surplus, at the expense of competition. Even when total surplus is constrained, some divisiveness in designs remains optimal.

2025-01-01T00:00:00Z