Abstract
The present study was conducted to determine whether students perceived their best friends as similar to them along the dimension of extraversion-introversion. Subjects' scores on the Eysenck Personality Inventory were compared with their perceptions of their own best friends' personalities. An over-all tendency to perceive similarity was indicated, with the exception being inventory-scaled introverts who showed no preference. In addition, preference for an hypothetical roommate was influenced by the amount of similarity between the roommates' perceived level of extraversion and the subjects' own degree of extraversion.

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