Assessment of drug therapy in chronic brain failure.

An 'arteriosclerosis score' has been devised in an attempt to differentiate between vascular and ideopathic chronic brain failure. The score was found to correlate closely with the ADL score, but not with MSQ score, nor with a battery of seven psychological tests. There are, however, close intercorrelations between certain psychological tests and the MSQ. This paper describes a series of tests, their correlations with each other in a group of elderly people, difficulties in their administration and the practical problems inherent in assessing drugs intended to be used in the prevention or treatment of brain failure.