Rorschach Aggressive Content (AgC) variable: a study of criterion validity

This study adds to the existing literature on the clinical utility of the Aggressive Content (AgC) variable proposed by Gacono and Meloy (1994). Criterion validity is evaluated by examining the relation between AgC and behavior. Rorschach and clinical chart material taken from psychological assessments were examined for 94 patients in Exner's (1993) psychiatric reference groups. An Aggression Chart Rating Scale (ACRS) was created to score the level of aggressiveness of each patient's diagnostic report. Analyses revealed good interrater reliability (intraclass correlation coefficient = .73) for ACRS scores and Aggressive Movement (AG; kappa = .73) and excellent reliability for AgC (kappa =.88) and Morbid Content (MOR: kappa = .79). Pearson's correlation revealed significant relations between AgC and both AG and MOR. All 3 Rorschach variables were significantly related to scores on the ACRS. A stepwise regression analysis utilizing these 3 variables resulted in AgC being the only nonredundant predictor of scores on the ACRS. This suggests that AgC was more strongly related to more aggressive ACRS scores than either AG or MOR. The continued support for the clinical utility of AgC as well as recommendations for the addition of the AgC variable to Exner's (1993) Comprehensive System's list of Special Scores are discussed.