Figure 1 | Scientific Reports

Figure 1

From: Medial prefrontal cortical thinning mediates shifts in other-regarding preferences during adolescence

Figure 1

Experimental design. (A) An illustration of a single trial of the UG task (fair-alternative condition). Each trial started with the presentation of a fixation crosshair with a jittered inter-stimulus interval (mean = 1530 s, min = 550 ms, max = 4950 ms; optimized with Opt-Seq 2; surfer.nmr.mgh.harvard.edu/optseq;68, followed by a decision phase where the participants made decisions after viewing two options available to the proposer and the proposer’s decision. The participants were instructed to make a decision within 5000 ms and their choice was shown on the feedback screen until the end of 6000 ms. (B) Examples of decision trees for the fair-alternative, no-alternative, and hyperfair-alternative conditions.

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