Equivalence of the Color Trails Test and Trail Making Test in nonnative English-speakers

The Color Trails Test (CTT) has been described as a culture-fair test of vi sual attention, graphomotor sequencing, and effortful executive processing abilities relative to the Trail Making Test (TMT). In this study, the equiv alence of the TMT and the CTT among a group of 64 bilingual Turkish univers ity students was examined No difference in performance on the CTT-1 and TMT Part A was found, suggesting functionally equivalent performance across bo th tasks. In contrast, the statistically significant differences in perform ance on CTT-2 and TMT Part B, as well as the interference indices fur both tests, were interpreted as providing evidence for task nonequivalence of th e CTT-2 and TMT Part B. Results have implications for both psychometric tes t development and clinical cultural neuropsychology. (C) 2000 National Acad emic of Neuropsychology. Published by Elsevier Science Ltd.