marginally significantp < 0.1
For the positive ROI, the difference of P300 between herding and antiherding was marginally significant [ F (1, 20) = 3.65, p < 0.1], and the amplitude of P300 elicited by antiherding (M = 9.46, SE = 1.25) was more positive than that by herding (M = 8.96, SE = 1.18).