Most personality traits refer to constructs, or what Allport called convenient fictions. For example, if someone asks you to show them your level of extraversion, there is nothing you could produce. Extraversion is a convenient fiction, a theoretical construct useful for explaining aspects of personality. Constructs are represented by observable measures, such as self-reports or observations of behavior. So, to explain how extraverted you are, you could produce scores on an extraversion scale. The construct, however, is always more than the observations.