Psychometric differentiation of biogenic and psychogenic impotence

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Abstract
In a sequential clinical sample of 64 subjects exclusively diagnosed as either biogenically or functionally impotent, Minnesota Multiphasic Personality Inventory (MMPI) and California Psychological Inventory (CPI) standard scales and the Beutler, et al., MMPI signs were all found to be ineffective in realiably classifying patients into the correct diagnostic groupings. Specific item analysis of the MMPI and CPI did identify a significant number of significantly differentiating individual items. Most of these items were shown to be reliably characterizable as indicating either performance anxiety or somatic complaint. Using these classifications of the items, the performance anxiety items were shown, consistent with theory, to be clearly associated with the functional impotence group. The somatic complaint items were shown to be clearly associated with the biogenic impotence group, presumably reflecting the symptoms of physiopathology, such as diabetes, underlying the biogenic condition.