The 14 conference papers on mental illness focus on the biological, genetic, psychopharmacological, psychopathological, and epidemiological and social factors related to psychoses. Divided into five sections each preceded by a brief introduction, entries include the following titles and authors: "The Biological Substrates of Schizophrenia" (S. Kety); "The Psychobiology of Depression" (W. Bunney); "The Role of an Emergent Developmental Psychopathology in the Study of Vulnerability to Psychosis" (N. Garmezy); "Genetic Studies in Schizophrenia and Depression" (G. Winokur); "Analysis of the Impact of Phenothiazines and Related Drugs on the Treatment of Schizophrenia" (G. Klerman); "The Impact of Lithium on the Treatment of Manic-Depressive Disorders" (S. Gershon); "Pharmacological Research and the Psychoses--An Overview" (M. Lipton); "Psychopathological Factors in Psychoses" (M. Katz); "An Overview of the Psychopathology of Psychoses--Past, Present, and Future of the Biometric Approach" (J. Zubin); "Keys to Understanding and Treating Functional Psychoses" (J. Strauss); "Psychopathological Aspects of Psychoses--Nongenetic Factors in the Family Setting" (L. Wynne); "Social Factors Affecting Psychotic Behavior" (D. Mechanic); "Epidemiology and the Planning of Services for the Mentally Ill" (E. Gruenberg); and "Psychiatric Services and the Changing Institutional Scene" (M. Kramer). (SBH)