Career development theories provide useful ideas for understanding career indecision, but neglect of a measurement of career indecisiveness has caused confusion. To examine the relationship between trait indecisiveness, vocational uncertainty, and interpersonal characteristics, 325 freshmen students were tested with a Trait Indecisiveness Scale and the Leary Interpersonal Checklist. The relationship between indecisiveness and vocational surety was examined by a chi-square test, while the relationship between indecisiveness and interpersonal characteristics was examined by a two-group discriminant analysis based on high versus low indecisive subjects. Self-reported vocational surety was significantly related to indecisiveness, lending support to the validity of the Trait Indecisiveness Scale. Results of the discriminant function showed that the primary interpersonal variables which contributed to the differences between high and low indecisiveness groups were submissiveness, lack of general dominance, self-criticalness, passivity, and cooperativeness (related to the need for acceptance). The validity of the indecisiveness construct as an important component of vocational indecision was supported. Clients suffering career indecision might also have high trait indecisiveness and be experiencing interpersonal discomfort. (Author/JAC)