[2] By incorporating his theory into personality testing, one can determine how one may act in a specific situation, as an employee, student, parent...
American psychologist Henry Murray developed a theory of personality that was organized in terms of motives, presses, and needs.
According to Murray, these psychogenic needs function mostly on the unconscious level, but play a major role in our personality.
Due to the forced choice, the EPPS is an ipsative test,[2] the statements are made in relation to the strength of an individual's other needs.
The manual reports studies comparing the EPPS with the Guilford Martin Personality Inventory and the Taylor Manifest Anxiety Scale.
Other researchers have correlated the California Psychological Inventory, the Adjective Check List, the Thematic Apperception Test, the Strong Vocational Interest Blank, and the MMPI with the EPPS.
In these studies there are often statistically significant correlations among the scales of these tests and the EPPS, but the relationships are usually low-to-moderate and sometimes are difficult for the researcher to explain.
Since the MMPI is still actively used today on a worldwide basis as a major brand test this comparison might be the most interesting to study.