Mr. Specter. Dr. Clark, in the line of your specialty, could you comment as to the status of the President with respect to competency, had he been able to survive the head injuries which you have described and the total wound which he had?
Dr. Clark. This, of course, is a question of tremendous importance. Just let me state that the loss of cerebrellar tissue would probably have been of minimal consequence in the performance of his duties. The loss of the right occipital and probably part of the right parietal lobes would have been of specific importance. This would have led to a visual field deficit, which would have interfered in a major way with his ability to read, not the interpretation of reading matter per se, but the acquisition of information from the printed page. He would have had specific difficulty with finding the next line in a book or paper. This would have proven to be a specific handicap in getting information on which, as the President of the United States, he would have to act.
How much damage he would have had to his motor system, that is, the ability to control or coordinate his left extremities, I would not know. This conceivably could have been a problem in enabling him to move about, to appear in public, et cetera. Finally, and probably most important, since the brain, as far as at its higher levels, largely as a unit, the loss of this much brain tissue likely would have impaired his ability in abstract reasoning, imagination; whereas, the part of the President's brain struck is not that part specifically concerned with these matters. The effect of loss of considerable brain tissue does affect the total performance of the organ in these matters. There would be grave doubts in my mind as to our ability as physicians to give a clear answer regarding his ability to function as President of the United States.
Our ability to judge this is sometimes sorely tried when dealing with people with considerably less intellectual and moral demands made upon them.
Mr. Specter. Doctor, did you prepare certain written reports based on your participation in the treatment of President Kennedy?
Dr. Clark. Yes, sir; I did.
Mr. Specter. And I now show you a document which has been supplied to the President's Commission, which we have marked as Commission Exhibit No. 392, and I now show you the second and third sheets, which purport to be the summary made by you and ask if that was prepared by you?
Dr. Clark. Yes, sir; it was.
Mr. Specter. And, are the facts set forth in those two sheets true and correct?
Dr. Clark. Yes, sir.