ABSTRACT
In his article "The Frontal Lobe Revisited," the late Professor Livingston argued for a "second look" at the frontal lobe from a psychosurgery perspective. Behavioral characteristics such as poor planning, stimulus-bound concrete reaction, inability to conform to testing rules, facetious and indifferent attitudes, and inappropriate social interactions are all important frontal lobe attributes that would be complementary to the numerical information obtained from a concept formation test that uses a cutoff-point method. Since psychometric tests are, by nature, behavioral tests, it would be impossible as well as unwarranted to expect the subject's performance to be as simplistic and clear-cut as a reflex. G. Talland noted that success in solving sequential concept formation problems that he designed steadily declined with age. It has been further suggested by investigators such as G. Hochanadel and E. F. Kaplan that the deterioration of cognitive functions noticed in the aged population resembles that seen in patients with right-hemisphere dysfunction.
