Age effects on Trail Making Test performance.

The Trail Making Test, used in differentiating brain-damaged from non-brain-damaged individuals, was administered to 150 non-brain-damaged subjects classified into five age decades to determine the effects of age on performance. Between-group comparisons as well as correlational data indicated that older subjects performed significantly more poorly than younger subjects. Significant small negative correlations of performance with education and intelligence suggested that lower intelligence and education also may adversely affect performance. Some implications of these findings for clinical neuropsychology are discussed.