Premium
The measurement of extroversion: A comparison of the Eysenck Personality Inventory and the Eysenck Personality Questionnaire
Author(s) -
Rocklin Thomas,
Revelle William
Publication year - 1981
Publication title -
british journal of social psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 98
eISSN - 2044-8309
pISSN - 0144-6665
DOI - 10.1111/j.2044-8309.1981.tb00498.x
Subject(s) - eysenck personality questionnaire , extraversion and introversion , psychology , personality , impulsivity , scale (ratio) , personality assessment inventory , psychometrics , social psychology , developmental psychology , clinical psychology , big five personality traits , physics , quantum mechanics
The authors of the Eysenck Personality Inventory (EPI) and the Eysenck Personality Questionnaire (EPQ) have claimed that the extraversion scales contained in the two tests are equivalent. Although scores on the two scales are moderately highly correlated, supplementary analyses suggest that they differ in at least one important respect. While the EPI scale measures extraversion as a reasonable mix of impulsivity and sociability, the EPQ's scale is almost purely a measure of sociability. Recent experimental evidence demonstrates that impulsivity is responsible for several findings previously attributed to extraversion. This evidence raises serious doubt about the usefulness of the EPQ extraversion scale in experimental research on extraversion.