Combining the Rorschach and the MMPI in the assessment of adolescents

We examined empirical findings related to the integration of the Rorschach and the MMPI in assessing adolescents. Intercorrelations between 50 Rorschach variables and the 13 MMPI basic scales are reported for a clinical sample of 197 adolescents. Significant correlations only slightly exceeded the number expected by chance. A review of six additional studies of adolescent samples also generally revealed either very modest or nonsignificant relationships between the Rorschach and the MMPI. These findings leave open the possibility that combining data from the two instruments may increase incremental validity, an issue that should be assessed by using multivariate analyses. Guidelines for integrating Rorschach and MMPI data in clinical practices with adolescents are provided.