Staff Meeting December 19, 2023
Staff Meeting December 19, 2023 Information on the IWH whistleblowing channel
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Mental Health
Mental Health Mental health encompasses emotional, psychological, and social well-being, influencing cognition, perception, and behavior. According to World Health Organization…
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PhD Courses
PhD Courses IWH-DPE Courses DPE courses website CGDE website Course materials: see Intranet, P:\Projekte\Doktoranden\Doktorandenkurse Courses at other Institutions Bavarian…
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Hygiene Concept ceased but Home Office rules unchanged
IWH Hygiene Concept ceased to have effect – Home Office rules remain unchanged from Tankred Schuhmann, May 28, 2022 Dear all, On May 25, various mandatory legal requirements for…
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Core office days and hygiene concept
Core office days and hygiene concept from Reint Gropp, November 22, 2022 IWH Hygiene Concept, as of Nov 1, 2022 (PDF, 110 kB) Dear colleagues, In the attachment, I am sending you…
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IWH Retreat Kick-off
IWH Retreat: Kick-off Meeting from Oliver Holtemöller, April 19, 2022 Dear all, On 08 and 09 June 2022, our retreat at Schwielowsee near Potsdam will take place. The motto is…
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Library
Library General Information (Leaflet) Terms of Use Classification (in German) Order Form (Word, 11kB) Access to Elsevier Journals (PDF, 127 kB)
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General Information
General Information General Information (Leaflet)
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Competition and Moral Behavior: A Meta-Analysis of Forty-Five Crowd-Sourced Experimental Designs
Anna Dreber, Felix Holzmeister, Sabrina Jeworrek, Magnus Johannesson, Joschka Waibel, Utz Weitzel, et al.
Proceedings of the National Academy of Sciences of the United States of America (PNAS),
No. 23,
2023
Abstract
Does competition affect moral behavior? This fundamental question has been debated among leading scholars for centuries, and more recently, it has been tested in experimental studies yielding a body of rather inconclusive empirical evidence. A potential source of ambivalent empirical results on the same hypothesis is design heterogeneity—variation in true effect sizes across various reasonable experimental research protocols. To provide further evidence on whether competition affects moral behavior and to examine whether the generalizability of a single experimental study is jeopardized by design heterogeneity, we invited independent research teams to contribute experimental designs to a crowd-sourced project. In a large-scale online data collection, 18,123 experimental participants were randomly allocated to 45 randomly selected experimental designs out of 95 submitted designs. We find a small adverse effect of competition on moral behavior in a meta-analysis of the pooled data. The crowd-sourced design of our study allows for a clean identification and estimation of the variation in effect sizes above and beyond what could be expected due to sampling variance. We find substantial design heterogeneity—estimated to be about 1.6 times as large as the average standard error of effect size estimates of the 45 research designs—indicating that the informativeness and generalizability of results based on a single experimental design are limited. Drawing strong conclusions about the underlying hypotheses in the presence of substantive design heterogeneity requires moving toward much larger data collections on various experimental designs testing the same hypothesis.
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23.05.2023 • 14/2023
Analysis of earnings calls: Blathering managers harm their company
If a senior executive refuses to give information to professional investors, the company's stock market value drops afterwards. This is shown in a study by the Halle Institute for Economic Research (IWH) after evaluating
1.2 million answers from tele-phone conferences.
Fabian Wöbbeking
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