Reliability of the stroop test with single-stimulus presentation.

Different versions of the Stroop test are used; however, for most versions of the Stroop test, there are no estimations of reliability. In the present study, stimuli were presented singly on a computer screen. 55 Swiss German subjects were tested. Test-retest reliabilities of 'XXXX' strings and conflicting color words were evaluated. Response latencies and Stroop interference were quite reliable. Single-stimulus presentation made it possible also to estimate internal consistency, which was high for classical Stroop interference in this format.