Skip to main content
. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: J Exp Psychol Gen. 2014 Feb 17;143(4):1476–1488. doi: 10.1037/a0035813

Figure 1.

Figure 1

Probabilistic value-based decision making task, psychophysiological measurement, and performance. A) During training, each stimulus pair was presented separately. Participants learned to select the better of the two options (the `winner') solely through probabilistic feedback (% reinforcement is displayed below each stimulus). During the testing phase, each option was paired with all other options and participants had to choose the best one, without the aid of feedback. Here we investigated high conflict appetitive (`win-win') and aversive (`lose-lose') and low conflict (`win-lose') conditions within the test phase. B) Example single trial data for pupil dilation and horizontal eye gaze. Gaze was quantified as a proportional value based on the percent of dwell time on the optimal stimulus until the choice. C) As in other studies of this task, participants were more accurate in the easy win-lose condition, and were slower in the aversive lose-lose condition (error bars are SEM).