The RIASEC model, with six personality types, was developed by which theorist?

• A. E.G. Williamson
• B. B.F. Skinner
• C. John Holland
• D. John Krumboltz

Answer: (C)

The RIASEC framework is a career personality model that links an individual’s interests to compatible work environments. It identifies six distinct types—Realistic, Investigative, Artistic, Social, Enterprising, and Conventional—and suggests people are most satisfied and successful when their traits align with the characteristics of their chosen occupation. This alignment concept, called person-environment congruence, is a central idea in how the model is used in career counseling. The six-type acronym itself comes from the initials of those categories, and the framework underpins widely used assessment tools like the Self-Directed Search. The theorist who introduced and developed this specific six-type model is John Holland. The other figures mentioned are associated with different theories or approaches to career development, not the RIASEC framework.