ABSTRACT
This chapter presents the results of psychometric and related test procedures administered to the operated and non-operated or control patients. Although a wide variety of psychometric procedures has been used previously in the evaluation of frontal lobe surgery, no clear indication of any lasting changes have been reported. (See Columbia Greystone Associates ’49, for a review of earlier findings.) The number of studies in which preoperative test scores were available is relatively small however, and when they were available, comparisons were usually based upon a single administration of a test. The experimental design in the present study, by providing for 2 preoperative measures for each of the tests, has established a more adequate preoperation baseline with which postoperation test performances can be compared.
