Deploring the fact that study of emotional and interpersonal problems in research has been slighted, the author recommends collaboration between group therapists and researchers in the behavior of small groups. He has found that both types of workers, confronted with multidimensional problems for which their theoretical studies have not prepared them, develop methodologies and at times an implicit set of interrelated hypotheses which ultimately move back into academic disciplines. Contrasting clinician with experimentalist, the author notes that while the psychologist controls variables in his laboratory, these same variables are only useful to the therapist if he can use them to promote change. On the other hand, a transference, a prime mover in therapy, is largely inaccessible to experimental manipulation. The clinician derives his problems from his patient's psyche; the experimenter studies his problems through his subjects. Coöperation between the two is strained since the psychiatrist usually lacks discipline in research, philosophy, and methods, while the experimentalist has