The Rorschach test records of 60 post-traumatic, brain injured patients have been compared with those of 100 control patients in an effort to find factors characteristic of organic cerebral alterations. Piotrowski's ten signs of cerebral disturbance have been evaluated. The results indicate that impotence, perplexity, automatic phrases, repetition, and color naming are of value in identifying brain injured patients. Nine additional signs, which are found to be helpful in diagnosis, are named and discussed. A review of the test records from an interpretive viewpoint indicates that anxiety, depression and hypochondriasis were frequently present and schizophrenic-like disturbances were occasionally present among the brain injured patients.