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. 2017 Apr 13;146(6):776–805. doi: 10.1037/xge0000286

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© 2017 The Author(s)

This article has been published under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Copyright for this article is retained by the author(s). Author(s) grant(s) the American Psychological Association the exclusive right to publish the article and identify itself as the original publisher.

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Two screenshots of the display during the experiment. The left panel shows the display during the evidence-accumulation phase of a trial. Participants chose whether Pacman goes up or down after seeing a sequence of cues (arrows) pointing up or down. The elephant next to the arrow indicates that this is an easy game, so the arrow points to the reward-holding path with probability 0.70. The right panel shows a screenshot during the intertrial interval (ITI). The participant has chosen the lower path and can now see that this was the correct (rewarded) decision. See the online article for the color version of this figure.