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Trial outline of a second-party punishment game in the Justice Game. In this second-party punishment sample trial, a Taker takes 100 chips from the participant and the participant can decide how much, if any, chips he wants to spend on punishment. Fixation screen: 2–5 s; Start screen: 2 s; Taker decision: 4 s; Response screen: 6.5 s. The 4 s window indicating the number of chips taken (Taker decision) was entered into the general linear models used for our fMRI data analysis.
