Relationships between Multidimensional Aptitude Battery (MAB) scores, inspection time (IT), choice reaction time (CRT), and the odd-man procedure (OMO) were investigated. IT was measured using a curve-fitting procedure that was less susceptible to variable task performance. IQ correlated significantly with IT (r = -.624) and OMO decision time (DT; r = .365) as well as with CRT DT (r = -.28). IT and OMO DT correlated .364. No significant relationships were found between these mental speed measures and Eysenck Personality Questionnaire-Revised (EPQ-R) dimensions of extraversion, neuroticism, and psychoticism, suggesting that motivational factors and strategies were minimized in this experiment.