Abstract
The internal reliability of the Seashore Rhythm Test was examined for a sample of 376 patients. Two different combinations of items yielded reliability coefficients of approximately .75. Repeated-measures analysis of variance indicated significant differences in the mean numbers of errors occurring on the three subtests. Item analysis showed considerable variability in the rate at which the items were passed. Items with low pass rates were identified among all three subtests which suggests that factors other than length of the patterns to be discriminated contribute to difficulty of items.