Aggression, impulsivity, and health functioning in a veteran population: equivalency and test–retest reliability of computerized and paper-and-pencil administrations

The present study examined the equivalency and test–retest reliability of two administration methods (paper-and-pencil and computerized) of the Aggression Questionnaire (AQ), Barratt Impulsiveness Scale-11 (BIS-11), and SF-36 Health Survey (SF-36) in a sample of 97 veterans. The two-week test–retest reliability for the conventional paper-and-pencil administrations of the AQ, BIS-11, and the SF-36 in the veteran population were generally reliable and comparable to the test–retest reliability of these measures noted in the research for other populations. Equivalence of the computer vs. paper-and-pencil administrations were examined and results indicated that for the AQ, ICCs for all four subscales and total score were substantially lower for the PC administration. For the BIS-11, ICCs were comparable with the exception of the Motor subscale, which was lower in the PC condition. For the SF-36, two of the domains were higher in the PC condition, with four more being comparable. Overall, the computerized administration of the BIS-11 and SF-36 was found to be equivalent to the “gold standard” paper-and-pencil administration of these measures and can be utilized successfully among veterans. The computerized administration of the AQ, however, was not found to be equivalent to the paper-and-pencil administration of the measure.