Leibniz Open Science Day 2025: “Better Science for Better Policies”

When? 27 October 2025
Where? Berlin (Leibniz-Association Gemeinschaft)
Keynote: Johanna Rickne (Stockholm University)

ZBW ─ Leibniz Information Centre for Economics, DIW Berlin (the German Institute for Economic Research), WZB (Berlin Social Science Center), and RWI ─ Leibniz Institute for Economic Research are pleased to invite to the Leibniz Open Science Day 2025: Better Science for Better Policies.

With the growing importance of the social sciences in addressing societal challenges, the significance of a meta-scientific perspective is also increasingly on the rise. We need a deeper understanding of how evidence is generated and communicated to society and policymakers.

Replications and meta-studies in particular are becoming increasingly crucial to ensure the reliability and validity of scientific research findings. These approaches help identify heterogeneities and biases, improve methodological standards, and foster transparency, ultimately enhancing the credibility of scientific knowledge.

Programme

8:45 - 9:00
Registration

9:00 – 9:10
Welcome
Marianne Saam (ZBW – Leibniz-Information Centre for Economics)
Jörg Ankel-Peters (RWI – Leibniz Institute for Economic Research)
Levent Neyse (WZB Berlin Social Science Center, DIW German Institute for Economic Research)

9:10 – 10:40
Plenary Session

  • 9:10 - 9:40
    Robustness in Development Economics - A Many-Analysist MetaReproduction 
    Julian Rose (RWI – Leibniz Institute for Economic Research, Germany)
     
  • 9:40 - 10:10
    #ManyDesignsCarbon 
    Rene Schwaiger (University of Innsbruck, Austria)
     
  • 10:10 - 10:40
    Inverse Hyperbolic Sins: Non-Robustness and Publication Bias in Log-Like Specifications 
    Essi Kujansuu (University of Turku; Finland)
     

10:40 – 11:00
Coffee Break

11.00 – 12.00
Keynote by Johanna Rickne (Stockholm University, Sweden)
“A case study in research replication: Does criminalizing the purchase of sex increase rape?”

12:00 – 13:00
Lunch Break

13:00 – 15:00
Parallel Session
 

ROOM HANNOVER

ROOM BERLIN

Policy documents across 185 countries predominantly rely on evidence from the Global North
Sebastian Ramirez-Ruiz (Hertie School Data Science Lab, Germany)

Predicting Social Science Results
Daniel Evans (University of Bonn, Germany)
 

Searching for the External Validity of Social Preference Games: A Guide of Field Environments Based on Expert Perceptions
Sergio Pirla (University of Zaragoza, Spain) 

Pre-registration for Economists: exhaustive templates for primary and secondary data
Thibaut Arpinon (Savoie Mont Blanc University and Institute for Research in Management and Economics, France)

Novelty and Reporting Bias in Economics
Valon Kadriu (University of Kassel, Germany) 

(Un)Published: Evidence of Publication Bias from Two German Probability-Based Panel Infrastructures
(SHARE BERLIN Institut, Germany)

Weight and See? Investigating the Strategic (Mis)Use of Survey Weights in Empirical Social Research
Daniel Krähmer (Ludwig-Maximilians-Universität München, Germany)

Lost in the Design Space? Construct Validity in the Microfinance Literature
Christina Petrik (University of Passau, Germany)
 

Quality-Driven and Reproducible Data Selection in Social Science Research Syntheses: Advocating for Better Data through Meta-Scientific Evidence and Training Infrastructures
Sanja Kapidzic (GESIS – Leibniz Institute for Social Sciences, Germany)

The Impacts of Optimal Bandwidths in Regression Discontinuity Design
Jack Frederick Fitzgerald(Vrije Universiteit Amsterdam, Netherlands)

15:00 – 15:20
Coffee Break


15:20 – 16:50
Plenary Session

  • 15:20 - 15:50
    Is Behavioral Science Predictable?
    Daniel Navarro-Martinez (Barcelona School of Economics, Spain)
     
  • 15:50 - 16:20
    A Missing Link? A Systematic Review of Population Dynamics in Climate–Migration Research 
    Arthur Zito Guerriero (RWI – Leibniz Institute for Economic Research)
     
  • 16:20 - 16:50
    Geography of Medical Knowledge
    Thiemo Fetzer (Warwick University and at the University of Bonn, Germany)
     

16:50 – 17:00
Closing
Marianne Saam (ZBW – Leibniz-Information Centre for Economics)
Jörg Ankel-Peters (RWI – Leibniz Institute for Economic Research)
Levent Neyse (WZB Berlin Social Science Center)

Organizing committee:

  • Marianne Saam, ZBW and University of Hamburg
  • Doreen Siegfried, ZBW
  • Jörg Ankel-Peters, RWI
  • Macartan Humphreys, WZB
  • Levent Neyse, DIW and WZB

Institutional Partners:

  • Leibniz Association
  • Lab2 Metalab for Better Science
  • RWI Policy Lab ‘Climate Change, Development & Migration’
  • Institute for Replication (I4R)
  • BSoE Insights