DISCUSSION
The purpose of this study was to examine several types of reliability and validity (both discriminative and convergent) of the DPICS II with father-child dyads. Results show solid evidence for the reliability and validity of the coding system. First, the majority of the individual categories of the DPICS II demonstrated good reliability. Second, in support of the discriminative validity of DPICS II, significant differences were found between the clinic and nonclinic groups on several of the DPICS II summary variables. Finally, in support of the convergent validity of the DPICS II, specific summary variables were shown to correlate significantly with other measures associated with behavior problems in children.
Reliability
Both kappa and intraclass correlations were examined for these data. All of the parent and child DPICS II categories were ranked according to kappa estimates and then subdivided into groupings labeled "excellent", "good", "fair", and "poor" to provide a method of organizing the information. The reliability estimates were interpreted using several general guidelines. First, the estimates were judged in relation to accepted standards within the literature for reliability. Then, the similarity between the estimates for each category was considered. The reliability estimates for categories with similar kappa values and intraclass correlations were considered accurate estimates. For those categories with poor to fair reliability estimates, the confusion matrices obtained in the 63