Personality assessment data can be obtained from four sources:

Question

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Life outcome/achievement data refers to objective measures of success, such as academic or work performance. Observation/informant data comes from someone who knows the individual well, such as a friend, family member, or teacher. Self-report data is obtained directly from the individual, usually through questionnaires or interviews. Process/performance data refers to measures of performance in a specific task or situation, such as reaction time or task completion time. These four sources provide complementary information when assessing an individual's personality.

Personality Assessment Data Can Be Obtained from Four Sources