The Defence Mechanism Inventory (Gleser & Ihilevich, 1969) was validated by examining the 16PF profiles of each group of defenders. These were found to correspond closely to profiles hypothesized on the basis of Freudian theory, and thus suggest that the test may be valid. The ipsative scoring system was thought to limit the clinical usefulness of the five scales and to hinder statistical analyses, and the development of a rating form of the questionnaire was recommended.
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Cooper et al. (1982) studied this question.
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