The four scales of the Novelty-experiencing Scale and the five scales of the Sensation-seeking Scale were administered to male and female college students. With the exception of the general scale of the Sensation-seeking Scale, which correlated substantially with its four remaining scales and one of the Novelty-experiencing scales, the sub-scales generally had only low to moderate rs within each of the scales and between all scales. Significant sex differences were found for five of the sub-scales. Although several of the sub-scales had low but significant correlations with SAT measures, both tests were relatively independent of the ability measures.