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Beliefs and Actions in the Trust Game: Creating Instrumental Variables to Estimate the Causal Effect

Miguel Costa-Gomes, Steffen Huck and Georg Weizsäcker

No 969, Discussion Papers of DIW Berlin from DIW Berlin, German Institute for Economic Research

Abstract: In many economic contexts, an elusive variable of interest is the agent's expectation about relevant events, e.g. about other agents' behavior. Recent experimental studies as well as surveys have asked participants to state their beliefs explicitly, but little is known about the causal relation between beliefs and other behavioral variables. This paper discusses the possibility of creating exogenous instrumental variables for belief statements, by shifting the probabilities of the relevant events. We conduct trust game experiments where the amount sent back by the second player (trustee) is exogenously varied by a random process, in a way that informs only the first player (trustor) about the realized variation. The procedure allows detecting causal links from beliefs to actions under plausible assumptions. The IV estimates indicate a significant causal effect, comparable to the connection between beliefs and actions that is suggested by OLS analyses.

Keywords: Social capital; trust game; instrumental variables; belief elicitation (search for similar items in EconPapers)
JEL-codes: C72 C81 C91 D84 (search for similar items in EconPapers)
Pages: 42 p.
Date: 2010
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Citations: View citations in EconPapers (13)

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Related works:
Journal Article: Beliefs and actions in the trust game: Creating instrumental variables to estimate the causal effect (2014) Downloads
Journal Article: Beliefs and actions in the trust game: Creating instrumental variables to estimate the causal effect (2014) Downloads
Working Paper: Beliefs and actions in the trust game: Creating instrumental variables to estimate the causal effect (2012) Downloads
Working Paper: Beliefs and Actions in the Trust Game: Creating Instrumental Variables to Estimate the Causal Effect (2010) Downloads
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