Answer:
The answer is researcher John L. Holland.
Explanation:
Psychologist John L. Holland is well known for his work on the aptitudes for certain careers or professions and personality traits that an individual might possess. The job quizzes that have been developed are based on the Holland Occupational Themes (RIASEC) which include realistic, investigative, artistic, social, enterprising, and conventional. These traits correspond in turn to the following attributes: doers, thinkers, creators, helpers, persuaders, and organizers.
