“…Future studies should determine whether individual variation in testosterone levels in males predicts performance on the Stop-Signal task, with higher testosterone levels predicting both higher accuracy and slower RT and SSRT. Alternatively, it is also possible that estrogen also play a role, as estrogens have been shown to increase reward sensitivity in several paradigms in women [16,55,74]. Future studies precisely monitoring sex steroid levels in both sexes are needed to test these hypotheses.…”