Another way to characterize executive functions is to take a look at behavioral neuropsychological tests that have been developed to measure different aspects of executive functions. It is well known that traditional intelligence quotient tests that are widely used in neuropsychological assessment of cognitive deficits following brain damage often fail to show anything abnormal in patients with prefrontal cortical damage. This lack of sensitivity has resulted in development of specific behavioral tests that do measure executive functions and prefrontal brain damage. In the following, the most widely used tests will be described.