The main effect of Region was qualified by a Region×Sex interaction, F(4, 82) = 3.54, p = .012, ηp2 = .14, 1-β = .84. A post hoc test of the sex effect in each region (collapsed across condition) indicated that in BA 25, subgenual ACC was most likely responsible for the Sex × Region interaction, males (M = 2.35, SE = .11) showed greater activity (more positive value) than females (M = 1.96, SE = .11), t(89) = 2.51, p = .014. There were no significant sex differences for the other regions (BA 10, t(89) = .72, BA 11, t(89) = .16, BA 24, t(89) = .07, BA 32, t(89) = .85).
