Nineteen black patients were matched with nineteen white patients and treated in individual psychotherapy in an inpatient milieu setting. It was found that black patients did better than white patients during their hospitalization. In addition on a one year follow-up a trend in the same direction was found. Suggested explanations for this were advanced.
Winston A, Pardes H, Papernik DS. Inpatient Treatment of Blacks and Whites. Arch Gen Psychiatry. 1972;26(5):405–409. doi:10.1001/archpsyc.1972.01750230015003