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We investigate how the selection process of a leader affects team performance with respect to social learning. We use a lab experiment in which an incentivized guessing task is repeated in a star network with the leader at the center. Leader selection is either based on competence, on...
Persistent link: https://www.econbiz.de/10011816763
This article develops a theoretical model for evaluating mandatory activation of welfare recipients in complex activation programmes. The model aims to summarize and describe heterogeneous content that is difficult to comprehend because of local variations, staff characteristics, or other...
Persistent link: https://www.econbiz.de/10014540984
An estimand of interest in empirical studies with observational data is the average treatment effect of a multi-valued treatment in the treated subpopulation. We demonstrate three estimation approaches: outcome regression, inverse probability weighting and inverse probability weighted...
Persistent link: https://www.econbiz.de/10012388873
Using causal graphs, this paper develops a simple check to uncover the direction of the causal link between economic policy uncertainty and stock market volatility. The check is applied to monthly data for 22 countries. The results imply that uncertainty is an instantaneous cause of stock market...
Persistent link: https://www.econbiz.de/10013370151
Evaluation studies aim to provide answers to important questions like: How does this program or policy intervention affect the outcome variables of interest? In order to answer such questions, using the traditional statistical evaluation (or causal inference) methods, some conditions must be...
Persistent link: https://www.econbiz.de/10011695407
We explain persistent differences in cultural traits of immigrant groups with the presence of community leaders. Leaders influence the cultural traits of their community, which have an impact on the group's earnings. They determine whether a community will be more assimilated and wealthier or...
Persistent link: https://www.econbiz.de/10011927973
We show that the Matthew effect, or Matthew mechanism, was present in the artificial cultural market Music Lab when social influence between individuals was allowed, whereas this was not the case when social influence was not allowed. We also sketch on a class of social network models, derived...
Persistent link: https://www.econbiz.de/10010321397
We explore how a relatively small amount of heterogeneous securities created turmoil in financial markets in much of the world in 2007 and 2008. The drivers of the financial turmoil and the financial crisis of 2008 were heterogeneous securities that were hard to value. These securities created...
Persistent link: https://www.econbiz.de/10010292330
common knowledge that some banks have incurred losses but not which ones. We develop a model that features contagion, meaning … of contagion is large, it is possible for no information to be disclosed in equilibrium but for mandatory disclosure to … increase welfare by allowing investment that would not have occurred otherwise. Absent contagion, mandatory disclosure cannot …
Persistent link: https://www.econbiz.de/10010352166
them but suffer losses through contagion when any agent on a path connected to them is hit by a shock. We first consider … that the completely connected network is stable, although, its exact structure, and thus contagion implications, is …
Persistent link: https://www.econbiz.de/10011816753