Fig. 6

Sex differences in the regression of regional activities with SR/SP scores. The statistics are summarized in the main text. a β contrast “dollar win vs. nil” of the PCC/PCu was positively correlated with SR score in men but not in women; however, the slope test failed to confirm the sex difference (z = 1.88, p = 0.06). b The β contrast “dollar win vs. nil” of the right middle frontal and postcentral gyri was negatively correlated with the SP score in women but not in men, and the slope test confirmed the sex difference in the correlation (z = 3.33, p = 0.0009). c The β contrast “dollar vs. cent win” of the right anterior insula and temporal gyrus and left superior frontal gyrus was negatively correlated with the SP score in women but not in men, and the slope test confirmed the sex difference (z = 4.46, p < 0.0001)