Suggestions are then made regarding the occupations or occupational clusters that most closely match one's interests. There are a number of assessment services on the Internet to help you. Many interest inventories are based upon Dr. John Holland's Personality Type Career Development Theory. A way to understand yourself is to look at your personality using the Holland Theory of Personality Types. Dr. John Holland theorizes that people work best in work environments that match their personality type.
Most people are some combination of two or three of the Holland interest areas.
Persons with an undifferentiated personality type preference are said to have a low profile. Low profiles are caused by either too many interest in too many areas or little or no interest in an area. There are other test instruments to help you conduct a self appraisal. The Profiler is a reliable and effective instrument for determining personality types. Individuals are shown their degree of preference through bar graphs.