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Contribution Details

Type Working Paper
Scope Discipline-based scholarship
Title The causal effect of trust
Organization Unit
  • Björn Bartling
  • Ernst Fehr
  • David Huffman
  • Nick Netzer
  • English
Institution University of Zurich
Series Name Working paper series / Department of Economics
Number 304
ISSN 1664-7041
Number of Pages 71
Date 2018
Abstract Text Trust affects almost all human relationships – in families, organizations, markets and politics. However, identifying the conditions under which trust, defined as people's beliefs in the trustworthiness of others, has a causal effect on the efficiency of human interactions has proven to be difficult. We show experimentally and theoretically that trust indeed has a causal effect. The duration of the effect depends, however, on whether initial trust variations are supported by multiple equilibria. We study a repeated principal-agent game with multiple equilibria and document empirically that an efficient equilibrium is selected if principals believe that agents are trustworthy, while players coordinate on an inefficient equilibrium if principals believe that agents are untrustworthy. Yet, if we change the institutional environment such that there is a unique equilibrium, initial variations in trust have short-run effects only. Moreover, if we weaken contract enforcement in the latter environment, exogenous variations in trust do not even have a short-run effect. The institutional environment thus appears to be key for whether trust has causal effects and whether the effects are transient or persistent.
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Keywords Trust, causality, equilibrium selection, belief distortions, incomplete contracts, screening, institutions, Vertrauen, Interaktion, Agency-Theorie, Spieltheorie, Einrichtung
Additional Information Auch erschienen als IZA discussion paper series No. 11917