A short scale for measuring introversion-extroversion

Abstract

The scale is based upon the Colgate Personal Inventory Form C-2, but is much shorter than the latter, since it requires only ten instead of forty minutes. It contains ten questions related to ten different traits, with multiple choice (five) graded answers ranging from extreme introversion to extreme extroversion. The validity of the scale (agreement of a single self-rating with the average of two ratings by acquaintances) was .58 ± .05; reliability (correlation of two ratings a month apart), .82 ± .03. These traits were selected from 48 traits tested for their diagnostic quality upon 276 college juniors and sophomores. The upper and lower quartiles in the scores of these students were designated respectively as those of introverts and extroverts. The author believes that "the scale should have a wide range of use in industrial and personnel work." (PsycINFO Database Record (c) 2016 APA, all rights reserved)