Career counseling is central to the counseling profession. The Career Development, Assessment, and Counseling (C-DAC) approach to career counseling, which facilitates the career development of people throughout their lives, has received wide attention; an analysis of the theory and research from which this model was derived are examined here. The book discusses the test instruments that make up C-DAC's assessment battery and presents specific recommendations for applying the C-DAC approach to high school, university, and community agency clientele. Chapter 1 provides the history of the C-DAC approach and explains its goals and implementation measures. Chapter 2 offers a detailed analysis of the instruments used in C-DAC, with special emphasis on adult career concerns, the career development inventory, and other measures. Chapter 3 emphasizes developmental career counseling with adolescents, and includes a careful analysis of theoretical considerations. The career development stage of college students is examined in chapter 4, along with C-DAC applications for this population. Chapter 5 discusses the theory and career development of adults and ways in which C-DAC can help adults. Numerous case studies with culturally diverse clients from different age groups and settings are used to illustrate the C-DAC approach. Contains name and subject indexes and approximately 155 references. (RJM)