Media contacts before Joint Economic Forecast Spring 2022
Media contacts before the publication of the Joint Economic Forecast Spring 2022 from Oliver Holtemöller, March 19, 2022 Dear all, During the four weeks before the publication of…
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Media contacts before Joint Economic Forecast Autumn 2022
Media contacts before the publication of the Joint Economic Forecast Autumn 2022 from Oliver Holtemöller, September 12, 2022 Dear all, During the three weeks before the…
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IWH EXplore Scholarship
IWH EXplore Scholarship Guidelines for the Awarding of IWH EXplore Scholarships (PDF, 290 kB) The IWH awards scholarships for the performance of a research task within an IWH…
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Leibniz Funds Leibniz Competition The Leibniz Competition is an internal competition of the Leibniz community, designed to to accelerate the achievement of the Leibniz…
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Human Resources Development Concept
Human Resources Development Concept of the IWH Human Resources Development Concept (pdf, 128 kB) HR development is the combination of all systematically arranged processes that…
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EU Funds
EU Funds Participant Portal of the European Commission EU Bureau of the BMBF (Federal Ministry of Education and Research) KOWI - European Liaison Office of the German Research…
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IWH Research Programme
IWH Research Programme IWH Research Programme 2015 , 2016 , 2017 , 2018 , 2019 , 2020 , 2021 , 2022 , 2023
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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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05.04.2023 • 9/2023
East German economy has come through energy crisis well so far – Implications of the Joint Economic Forecast Spring 2023 and new data for the East German economy
In 2022, the East German economy expanded by 3.0%, significantly stronger than the economy in West Germany (1.5%). The background is a more robust development of labour and retirement incomes. For 2023, the Halle Institute for Economic Research (IWH) forecasts a higher GDP growth rate of 1% in East Germany than in Germany as a whole (0.3%). The unemployment rate is expected to stagnate, with 6.8% in 2023 and 6.7% in the following year.
Oliver Holtemöller
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