Empirical Reformulation of the House-Tree-Person for Forensic Evaluations Validation Against Binary Static Criteria

Study hypotheses were that an empirical scoring system for the House-Tree-Person (H-T-P) can predict diagnostic and nondiagnostic criteria with prediction of nondiagnostic criteria stronger than diagnostic criteria. Study materials include case files and empirical scoring system for H-T-P data. Study employed an archival sample of 179 individuals referred for forensic psychological evaluations. Reviewed case files to determine the presence of criterion variables. Logistic regression of sets of H-T-P variables significantly predicted nine of 12 criteria. Secondary hypothesis of stronger relationships for nondiagnostic criteria than diagnostic criteria not confirmed. Significance levels for predictor sets ranged from 0.0007 to 0.503.