Sum of MMPI Scales F, 4, and 9 as a measure of aggression

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Examined the relationship between scores on the MMPI and both concurrent and prior aggression with 426 19-yr-olds from the general population. Aggression was measured through peer nominations obtained concurrently and 10 yrs earlier. Correlation and regression analysis indicated that the sum of T scores for Scales F, 4, and 9 was a valid measure of aggression. The composite was also shown to have a higher reliability than its component scales. Using an additional 283 12.9-17.1 yr old Ss from delinquent populations, it was demonstrated that the composite was an excellent discriminator between delinquent and general populations of males and females even when intelligence and social status were controlled. (20 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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