48 psychiatrically hospitalized adolescents were divided into 4 groups according to suicidal behaviour: previous suicide attempt only, psychiatric unit attempts only, dual attempt, & nonsuicidal control. ANOVA applied to composite Rorschach Multiple Sign scores was highly significant. A cutoff score of 4 signs was identified as a predictor of suicidal behaviour, although none of the individual signs differed significantly among the 4 groups.