Psychological changes over a three-year period following bilateral prefrontal lobotomy.

A Review of Theory in Physiological Psychology

“…Only a few standard psychological tests have been successful in demon strating any change in the psychosurgical patient. The Porteus maze, the digit-span recall portions of intelligence tests, and nonsense-syllable recall seem most often impaired (134). Yet, psychiatrists and persons who are in close contact with a postlobotomy patient have no difficulty in spotting the fact that some important change has taken place in the patient.…”

Psychological changes over a five year period following bilateral prefrontal lobotomy.

“…The battery utilized in the fifth year of testing consisted of 21 tests that yielded the 40 "clear-cut measures of functional efficiency" reported in the three-year study (1). A description of these tests and the measures derived from them can be found elsewhere (2).…”

A second study of psychological changes during the first year following prefrontal lobotomy.

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Scherer and his associates have published two reports (11,12) dealing with the changes in a sample of schizophrenic patients following prefrontal lobotomy. The present paper reports the results of a similar experiment utilizing an independent sample.Earlier studies of the effect of prefrontal lobotomy on psychological test scores (1, 2, 4, 7, 9) have yielded conflicting results.

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“…Scherer and his associates have published two reports (11,12) dealing with the changes in a sample of schizophrenic patients following prefrontal lobotomy. The present paper reports the results of a similar experiment utilizing an independent sample.…”