(A) The main effect of subjective value across all participants (yellow shading) is overlaid on the nucleus accumbens (NAcc) region of interest (ROI; red shading) used to extract BOLD signal estimates for individual difference analyses (Choi et al., 2012). Small-volume corrected cluster (with bilateral NAcc ROI): pFWE(peak-level) = 0.043, peak t value = 3.55, peak MNI coordinate: 12, 12, −6. Whole-brain cluster: peak MNI coordinate: 4, 12, 0; peak t value = 5.94, k = 304, pFWE(peak-level) = 0.029.
(B) Scatterplot illustrates the significant positive correlation between psychopathy and subjective value-related BOLD signal within right NAcc.