Ss conflicted or nonconflicted in the achievement area, as assessed by Worell and Worell's Personaliry Conflict Scale, were compared on number of arithmetic problems completed in consecutive 2-min. periods. Ss whose scale responses indicated a preference for achievement but the presence of competing behaviors in achievement situations (high conflict) completed significantly fewer arithmetic problems than Ss whose responses indicated nor only high achievement need but also the use of comparable achievement-related behaviors (low conflict). Results were discussed as supporting the use of this scale to measure personality conflict.Recently, Worell and Worell (1965) proposed a novel method for assessing personality conflict. Their approach is to treat conflict as a differential between the total strengths of approach and avoidant tendencies within a set of functionally related behaviors ( o r needs). T o measure this differential, they proposed a scale which consists of a paired-comparison format. Strength of an individual's approach and avoidance in a variety of need areas is measured by modified scales from Edward's Personal Preference Schedule (Edwards, 1954). Scale items are worded in two ways. First, in terms of behavior preference or need, example: "I most prefer . . . ." Preference statements are felt to approximate approach dispositions more closely than actual behaviors. Second, in terms of behavior actually used, example: "I most frequently . . . ." I t is reasoned that avoidance in each need area is reflected in the total number of changes, relative to need, that occur when S is asked to indicate which behaviors he most frequently uses. Worell and Wore11 conceptualize the individual who states that he uses silbstantially fewer behavicrs, more behaviors, or different behaviors, in a need area than he would like to use, as an individual in conflict. In other words, conflict is indicated when an icdividual's behavioral choices (what he most frequently does) differ from his stated preferences (what he most prefers), for he is indicating that competing dispositions are replacing supposedly preferred alternatives. The relatively nonconflicted individual, on the other hand, tends to use the behaviors that he states he prefers. This suggests that the preferred behaviors are dominant and not in confl~ct with other potential alternatives.Previous findings (Worell & Worell, 1965 ) have indicated strong support for the use of this procedure in assessing personality conflict. However, the authors suggest that more accurate behavioral predictions will most likely be -made if one considers a person in conflict (i.e., competing responses in a specific need area) rather than dealing, as they did in their study, with a generally 'The present research was assisted by a special research project allotment from the Graduate School, Southern Illinois University.