title: The induction of acute psychosis in a group setting.
abstract: The case histories of two patients are described, each of whom suffered a severe psychotic decompensation, one apparently schizophreniform and the other affective, after attending a seven day marathon group conducted by a charismatic, aggressive leader. The work of Yalom and Lieberman is reviewed, with regard to leader and participant characteristics in encounter group casualties. Drawing upon the work of Bion and Kernberg, a specific means for the induction of psychosis is suggested, involving primitive splitting and the projection of "all bad" self-object constellations within a group setting.
mesh_terms: D000328:Adult; D003702:Delusions / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D009864:Ontario; D011618:Psychotic Disorders / Q000209:etiology*; D012681:Sensitivity Training Groups