Eysenck Personality Inventory as a Mood Test with Manic-Depressive Patients

Abstract
The Eysenck Personality Inventory was used as a mood indicator instead of as a trait test with a group of manic-depressive patients associated with a research ward. Some patients completed the EPI while in a normal state, some while in a depressed or manic state, and some in two or more clinically defined states. Results showed that depression was associated with a significant decrease in extraversion and a significant increase in neuroticism. The manic state however, was not clearly differentiated from the normal one. It appears that the inventory may be a useful indicator of depressive mood.

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