Test-retest reliability of psychological and neurobehavioral tests self-administered by computer

A series of 12 psychological and 7 neurobehavioral performance tests were a dministered twice to a nonclinical normative sample with 1 week between adm inistrations. The tests were presented in a self-administered computerized format. One week test-retest reliabilities were comparable to conventional administration formats. The results suggest that individual test reliabilit y is not affected when tests are administered as part of an extensive multi -measure battery. Computer administered test reliability coefficients also were compared to a Mixed Format (computer-conventional) administration with mixed format reliabilities generally similar to the reliabilities of publi shed conventional, tests but also generally lower than same format testing. Compared to psychological test reliability, neurobehavioral test reliabili ty appeared more vulnerable to decreases with mixed format testing. These c onclusions should not be generalized to all computer implemented tests as t he qualities of the test implementation will affect the outcome.