Many studies on therapeutic factors in g-roup psychotherapy were done during the 1970s and 1980s, primarily with Western samples. The present study was carried out in a psychiatric inpatient clinic in Turkey. Using Yalom's (1975) therapeutic factor questionnaire administered at discharge, patients rated existential factor, instillation of hope and self-understanding as the most helpful factors and identification as the least helpful. There were significant differences among patients with regard to gender, age, education, and comorbid personality disorder, but not with Axis I diagnosis or number of attended sessions. Patients' and psychiatrist's ratings showed significant differences. Differences between this Turkish sample and those reported in common Western literature are discussed under the light of relatedness psychology, which is an important concept of cross-cultural psychology.