An independent-samples t-test comparing transformed discounting rates revealed that female participants (M ¼ 1.47;
SD ¼ 2.11) had significantly greater rates of probability discounting than did male (M ¼ .66; SD ¼ 1.25) participants (t ¼ 4.08, df ¼ 269, p < .001), indicating more risk aversion among female participants.