1. Background.- 1 Introduction.- 2 The Literature.- 2. Materials and Methods.- 3 The Project Design.- 3. Results.- 4 General Description of the Sample.- 5 Descriptive Epidemiological Results Derived from the Data Input Sheet.- 6 Analytical Epidemiological Hypotheses.- 7 Results Derived from the Interview Protocols.- 8 Psychological Test Results and Statistical Controls.- 9 Treatment Uptake and Indication for Psychotherapy.- 10 Prognosis and Course.- 11 A Complex Model for the Origin of Psychogenic Disorders (by N.Schiessl).- 4. Discussion.- 12 Results from the Point of View of Epidemiological Research.- 13 Significance of the Results for Psychoanalysis.- 14 Implications for the Care of the Psychogenically Ill.- 15 A Retrospective Assessment and Prospects for the Future.- Interview Design.- Symptom Checklists (SC).- Inventory for the Documentation of Life Events.- Additional Life Event Sheet.- Symptom — Sign Inventory.- Illustrative Examples for the Impairment Score.- References.