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. Author manuscript; available in PMC: 2014 May 21.
Published in final edited form as: Exp Clin Psychopharmacol. 2012 Dec 17;21(1):66–73. doi: 10.1037/a0030843

Figure 1.

Figure 1

Point values for the first 100 trials of the bandit task. Participants selected one of six slot machine arms to play per trial. The number of points paid off by each slot machine gradually changed from trial to trial, independently of other machines. The pattern of point values was determined according to a biased random walk (Equation 1). Each line represents the point values for a single slot machine. Dots represent the selections made by a representative subject.