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. 2019 Jul 8;10:469. doi: 10.3389/fpsyt.2019.00469

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Copyright © 2019 George, Sheynin, Gonzalez, Liberzon and Abelson

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Performance on “Gain-Only” and “Loss-Only” trials where both gambles had identical probabilities (14 out of 126 trials). Higher values represent more optimal performance with potentially better outcomes. Note that the maximum value on the y-axes (18.9) represents the optimal difference in expected value (ΔEV), if the gamble with the higher EV was always chosen. (A) Patients diagnosed with obsessive-compulsive disorder (OCD) showed less optimal performance than controls (**p = .041). (B, C) This result appeared to be mostly driven by differences on “Gain-Only” trials (*p = .067, whereas p = .306 for the OCD vs HC comparison on “Loss-Only” trials). Error bars indicate ±1 standard error of the mean.