According to A. R. Luria (1973) the cerebral organization of mental activity can be understood through analyzing how mental activity is altered in different local brain lesions. Recent brain function research has used this approach in locating areas of the brain involved in specific processes. This study recognized the importance of this method for locating specific cognitive processes within the brain, while stressing the need for more normative studies that answer the "how" and "what," not just the "where" and "when," of normal frontal lobe function. The study involved administering verbal and nonverbal fluency tests to 67 non-patients, investigating the effects of individual differences. The hypotheses of this study were that: (1) design fluency measures would correlate with word fluency measures; and (2) gender, education, handedness, eyedness, and other functions would not be associated with the verbal and non-fluency measures. Results suggested that no significant gender effects exist across all fluency and handedness measures. Eyedness was found to significantly affect measures of nonverbal fluency. Design fluency was revealed as the possible nonverbal analogue to word fluency. The hypothesis that education is not associated with fluency measures was rejected. (BGC)