A NORMATIVE STUDY ON VISUAL REACTION-TIMES AND 2 STROOP COLOR-WORD TESTS

Two-hundred and nine normal subjects underwent a study aimed at provid ing norms for some attention tests currently used in neuropsychologica l examination. Norms were calculated taking into account the demograph ic variables. Our battery included single visuo-manual and go/no-go re action times, and two versions of the Stroop Colour-Word Test. For the latter test, we employed a traditional version based on card presenta tion and a new version based on computer-assisted presentation. We eva luated the intercorrelation of the different tests, and studied the st atistical regression models in order to adjust the original scores acc ording to age, education and gender. Normative values were calculated following the Equivalent Scores method. The pattern of intercorrelatio n of our battery and the regression models of the scores are discussed with reference to the literature. The newly developed computer-assist ed presentation of the Stroop test offers some advantages over the tra ditional version, especially with patients affected by spatial disorde rs.