Regular Quantal Response Equilibrium
AbstractThe structural Quantal Response Equilibrium (QRE) generalizes the Nash equilibrium by augmenting payoffs with random elements that are not removed in some limit. This approach has been widely used both as a theoretical framework to study comparative statics of games and as an econometric framework to analyze experimental and field data. The framework of structural QRE is flexible: it can be applied to arbitrary finite games and incorporate very general error structures. Restrictions on the error structure are needed, however, to place testable restrictions on the data (Haile et al., 2004). This paper proposes a reduced-form approach, based on quantal response functions that replace the best-response functions underlying the Nash equilibrium. We define a regular QRE as a fixed point of quantal response functions that satisfies four axioms: continuity, interiority, responsiveness, and monotonicity. We show that these conditions are not vacuous and demonstrate with an example that they imply economically sensible restrictions on data consistent with laboratory observations. The reduced-form approach allows for a richer set of regular quantal response functions, which has proven useful for estimation purposes. Copyright Springer Science + Business Media, Inc. 2005
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Bibliographic InfoArticle provided by Springer in its journal Experimental Economics.
Volume (Year): 8 (2005)
Issue (Month): 4 (December)
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Web page: http://www.springerlink.com/link.asp?id=102888
quantal response equilibrium; discrete choice models; reduced-form approach;
Other versions of this item:
- Goeree, Jacob & Holt, Charles & Palfrey, Thomas, 2005. "Regular Quantal Response Equilibrium," Working Papers 1219, California Institute of Technology, Division of the Humanities and Social Sciences.
- Goeree, Jacob K. & Holt, Charles A. & Palfrey, Thomas R., 2004. "Regular quantal response equilibrium," Working Papers 1203, California Institute of Technology, Division of the Humanities and Social Sciences.
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