3 behavioural approaches in the treatment of 6 obsessive-compulsive patients were examined. The approaches were: 1) exposure in imagery; 2) thought stopping; & 3) rational-emotive therapy. One subject required rational-emotive therapy in addition to exposure when exposure therapy decreased anxiety associated with his suicidal obsessions. After five sessions, suicidal obsessions were ameliorated & the subject reached the criteria for successful completion of therapy. (30 refs.)