The paper looks at the value and need for theory, specifically as it relates to career development/career education for the deaf. A review of the literature provides an overview of major theoretical ideas regarding career development. An interactive adjustment model is described which incorporates four parameters: personal characteristics, environmental interactions, learning activities, and social experiences. The career development model is outlined in terms of corresponding postulates, deductions, and definitions. Several research hypotheses related to career development of the deaf are offered. Tables and figures illustrating the model conclude the paper. (SB)