Career decision making is an important aspect of life. At some point one must decide what type of job to apply for or whether to seek education for a specific career. Many individuals struggle with these decisions. Unfortunately, multidimensional measures of uncertainty are needed in providing guidance to such persons, because it appears the indecision phenomenon is multidimensional. The present study involved the development of a 97-item multidimensional measure of 6 career-indecision factors. Based on data provided by 364 college students, scale scores on the Career Assessment Diagnostic Inventory (CADI) had reliability coefficients ranging from 0.83 to 0.94. Factor analysis results were supportive of a conclusion that CADI scores are construct valid. These results suggest that the CADI has considerable potential as a multidimensional measures of factors thought to be related to career indecision. An appendix contains the items retained in the final CADI version. (Contains 9 tables and 58 references.) (Author/SLD)