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Summary
The dimension of “extraversion”, as measured by the Eysenck Personality Inventory (EPI) is examined in terms of its construct validity and the compatibility of its label with the popular use of the term “extraversion”; 242 naive 5s rated themselves for (1) how extraverted they felt they really were. (2) how extraverted they felt they appeared to others, and (3) the ideal amount of extraversion one should have; they then took the EPI. Ratings 1 and 2 correlated .46 and .48 with EPI extraversion scores, significant at the .001 level. This is seen as contributing to the construct validity, as well as justifying the labeling of the EPI dimension. An attempt to relate the EPI lie score to discrepancies between self and ideal ratings was unsuccessful.