THE NEUROPSYCHOLOGICAL SPECTRUM IN TRAUMATICALLY HEAD-INJURED PERSONS

The neuropsychological spectrum was investigated in a traumatically br ain-damaged population. In this spectrum neuropsychological measures w ere regarded as the most biologically oriented, achievement measures a s the most acquired skill-oriented, and intellectual measures as havin g an intermediate position. It was found that the achievement measures correlated the most highly with each other, the intellectual measures intercorrelated to a lesser extent, and the intercorrelations of neur opsychological measures yielded a zero-order median correlation. It wa s further found that the correlations of measures with those in other categories had the same ranking. It was inferred that brain damage alt ers the pattern of the neuropsychological spectrum because of dispropo rtionate impairment in the biological direction of the spectrum.