General cognitive abilities and patterns of adaptation: for Serial Color-Word Test norms based on reading times.

In a pool of 859 clinical and nonclinical Serial Color-Word Test protocols, significant positive correlations were observed between reading times on the Stroop task and measures of linear and nonlinear change. Especially nonlinear change, both within and between the five subtests, showed high correlations with reading times. To derive new time-related norms, the sample was divided into five time groups of the same size and stratified medians were calculated for each of the variables of the test. The new classification procedure should permit an assessment of patterns of adaptation less dependent on the general level of perceptual-cognitive functioning.