Career development programs can benefit from knowledge of the needs and characteristics of their participants. To investigate whether certain types of individuals seek career development assistance more often than others, 279 self-selected white collar employees of a large, federal biomedical research company completed the Myers Briggs Type Indicator and participated in either individual or group career development activities (CDA) over a 3-year period. An analysis of the results showed that the "typical" CDA participant was a 36-year-old female who had completed at least 2 years of college, was employed in a support-level occupation, with a preference for attending group CDA's. The participants tended to have a sensing/judging temperament style, in addition to extraversion/introversion and thinking/feeling preferences. However, having one temperament style rather than another did not in itself drive individuals to seek career development activities. Having a temperament style which was non-representative of the organizational norm did influence participation in CDA's. Introverts represented 54 percent of all persons seeking assistance, over twice as many as would be predicted by their presence in the general population. The findings suggest that individuals having organizationally representative styles may have need for CDA services not currently available. (BL)