A Meta-Analysis of the relationship between the Rorschach Ego Impairment Index (EII) and psychiatric severity.

The present study examined the relationship between the Rorschach Ego Impairment Index (EII) and psychiatric severity. Search procedures yielded 13 independent samples (total N = 1402, average n = 108, standard deviation = 90) for inclusion in the meta-analysis. Inter-rater reliability analyses demonstrated that coding of effect sizes and moderator variables was completed with good to excellent reliability.