The current study is the first of its kind to examine gender differences in outcome-related ERP components. Although condition differences were predominant and robust, gender differences were subtle and specific to certain ERP features (such as waveform and topography). Statistically, the only gender difference observed was in the ORN component while processing the amount (i.e. large vs. small): males had higher ORN amplitude and shorter ORN latency for the large amount (i.e. 50) than for the small amount (i.e. 10) while females did not show any differential processing for amounts (see Fig. 6, 2nd row). However, it should be noted that both males and females were identical in showing differential processing of amount in terms of ORP amplitude, which occurred more than 100 ms after the ORN component. This finding shows that males were more sensitive in amount processing, which commenced much earlier and persisted much longer in males as evident in ORN and ORP; in females it started much later than 100 ms, as evident only in ORP amplitude. On the other hand, there were no statistically significant gender
