Factor analyses of RIASEC personality inventories have indicated the importance of thing and person orientation in predicting individual fitness with certain career fields. Thing orientation has been associated with higher likelihood of pursuing STEM careers. On average, men score higher in thing orientation which predicts male overrepresentation in STEM fields. Male variability hypothesis suggests that men may also have greater variability in various attributes compared to women. The current research examined whether greater male orientation towards STEM is the result of greater male thing orientation or whether it is the result of greater male variability in thing orientation. To address this question, this study used archival data on male and female recall performance on assigned readings of STEM-related topics. Statistical analyses were conducted to examine patterns in skew, kurtosis, and variance in STEM recall performance and person/thing orientation for men and women. Results confirmed greater male variability in thing orientation, but positive skewness for women. Shapes of various statistical distributions for recall and person/thing orientation and their implications on gendered representation in STEM are analyzed. Potential origins of sex differences in person/thing orientation and future directions are also discussed.