RIASEC
The six interest types used in career guidance: Realistic, Investigative, Artistic, Social, Enterprising, Conventional.
Developed by John Holland, RIASEC describes interests as a mix of six types. GradRun calls them Doer, Thinker, Creator, Helper, Persuader and Organiser. Your top three letters form your Holland code.
Interests predict what you will enjoy, not what you can do. The Full test pairs them with aptitude questions for that reason.