title: An experimental investigation of cohesiveness in marathon and conventional group psychotherapy.
mesh_terms: D006126:Group Processes; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008605:Mental Health Services; D011615:Psychotherapy, Group; D012659:Semantic Differential; D019966:Substance-Related Disorders / Q000534:rehabilitation; D013637:Tape Recording; D013997:Time Factors