Manic-Depressive Heredity and Remission in Schizophrenia

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Abstract
In the investigation of prognostic factors relevant to remission in schizophrenia little attention has been paid to positive heredity for affective psychosis. One result of this relative disinterest has been to foster the opinion that heredity is of no prognostic value. Although his own work (8) supports the assumption that manic-depressive heredity is of good prognostic import in schizophrenia, Langfeldt (8) cautions:“I think we must conclude that any investigation which contends a relationship between a hereditary manic-depressive disposition and a favourable prognosis in a schizophrenic case has not yet been verified by satisfactory statistical data.”