Vlaev, Ivo and Chater, Nick. (2008) Debiasing context effects in strategic decisions : playing against a consistent opponent can correct perceptual but not reinforcement biases. Judgment and Decision Making, Vol.3 (No.6). pp. 463-474. ISSN 1930-2975

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Abstract

Vlaev and Chater (2006) demonstrated that the cooperativeness of previously seen prisoner’s dilemma games biases choices and predictions in the current game. These effects were: a) assimilation to the mean cooperativeness of the played games caused by action reinforcement, and b) perceptual contrast with the preceding games depending on the range and the rank order of their cooperativeness. We demonstrate that, when playing against choice strategies that are not biased by such factors, perceptual biases disappear and only assimilation bias caused by reinforcement persists. This suggests that reinforcement learning is a powerful source of inconsistency in strategic interaction, which may not be eliminated even if the other players are unbiased and the markets are efficient.

Item Type:	Journal Article
Subjects:	H Social Sciences > HN Social history and conditions. Social problems. Social reform
Divisions:	Faculty of Social Sciences > Warwick Business School > Behavioural Science Faculty of Social Sciences > Warwick Business School
Journal or Publication Title:	Judgment and Decision Making
Publisher:	Society for Judgment and Decision Making
ISSN:	1930-2975
Date:	August 2008
Volume:	Vol.3
Number:	No.6
Number of Pages:	12
Page Range:	pp. 463-474
Status:	Not Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/44334

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