Diabetes is well known to exert an important influence on the central nervous system. Kraus1 recently summarized the more common neurologic lesions, and the psychoses occasionally associated with diabetes have been the subject of numerous studies.
The diabetic patient, on his own part, complains of loss of memory and of poor ability to concentrate the attention. So far as we are aware, there are no objective data which either substantiate or contradict this clinical picture in reference to attention and memory. We have undertaken to gain some light as to the extent of the impairment if such exists, comparing diabetic patients as a group with controls who are of about the same mental status.
At the New England Deaconess Hospital in Boston, Dr. E. P. Joslin has for some years conducted twice a week a patients' class in diabetic hygiene. We took advantage of meetings of this class which