Metatraits: Interitem Variance as Personality Assessment
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Abstract
Many researchers studying individual differences conduct studies in which they ask a large number of individuals to complete a questionnaire designed to measure a specific trait. The researchers then examine whether the individuals receiving a high score on the trait measure will perform differently on a behavioral measure, or other questionnaire, than individuals receiving a low score on the trait. An implicit assumption of this methodology is that the trait dimension being measured applies equally well to all individuals. In other words, a particular individual participating in the study may receive a high score on the trait (or may receive a medium score or a low score), but every individual's score is equally meaningful as a representation of that individual's personality.