|The Self-Directed Search, 5th Edition (SDS-5) is a self-administered, self-scored, and self-interpreted career counselling tool. Clients can use the SDS to learn more about occupations that match their interests, abilities, and personalities. Like its predecessors, the SDS 5th Edition is based on John Holland’s theory that both people and work environments can be classified according to six basic types: Realistic, Investigative, Artistic, Social, Enterprising, and Conventional. These personality types are known collectively as the Holland RIASEC model. The SDS asks questions about the individual’s aspirations, activities, competencies, and level of interest in different occupations. From the responses, the SDS generates a three-letter Summary Code, which can be used to help the individual find his or her educational and occupational matches.