A study was designed to investigate the validity and reliability of the adult Career Concerns Inventory, which assesses career concerns of adults of any age and occupation. Subjects, 4 male and 165 female students (ages 23 to 62) enrolled in the graduate nursing program at a southern university, were administered the adult Career Concerns Inventory (CCI) and the Career Development Inventory (CDI), which assesses the readiness of respondents to make sound vocational choices. The CCI focuses on the planfulness and exploration of D. E. Super's model of vocational or career maturity; it assesses exploration, establishment, maintenance, disengagement, and career change. The CDI is a multidimensional inventory focusing not only on the planning and exploration dimension of Super's model, but also on the additional dimensions of decision-making and information about the world of work. Data from responses underwent canonical correlation, stepwise multiple-regression analysis, and Pearson correlation and alpha reliability coefficients. Results support the validity of the CCI as a psychometric instrument. However, the CCI should be used in conjunction with other measures, such as the CDI. (TJH)