Regarding reliability and validity, the AGVQ was developed on the basis of research with over 2,000 demographically diverse adolescents.
With regard to criterion validity, self-reported gun ownership was viewed by the authors as a useful variable by which to assess the AGVQ's validity performance.
Four additionally distinct yet conceptually related measures constituted this study's dependent measures of aggression (MPRI-C, MPRI-P, AGVQ, and School Detention / Referral Records).
A 2 X 2 between subjects multivariate analysis of covariance was performed on three dependent variables associated with aggression: the Missouri Peer Relations Inventory-Child (MPRI-C), the Attitude Towards Guns & Violence Questionnaire (AGVQ), and the School Detention/Referral Records.
Univariate analysis was again utilized to investigate where such differences lie, and in this case revealed that the AGVQ variable was significantly different across treatment groups at post test, F (1, 82) = 10.90, p = .00 (?2=.12).
With regard to aggression, a separate ANOVA procedure was run to test if groups were significantly different on the AGVQ variable after 1 year following treatment.