The major emphasis of this paper is in the examination of test item response patterns. Tatsuoka and Tatsuoka (1980) have developed two indices of response consistency: the norm-conformity index (NCI) and the individual consistency index (ICI). The NCI provides a measure of the degree of consistency between the response pattern of an individual and the difficulty ordering of the items for a norm group. The ICI provides a measure of the degree to which an individual's response pattern remains internally consistent within a topic or item type over time. The NCI and ICI were computed for 357, 396, and 643 third, sixth, and seventh/eighth grade students, respectively, on the Basic Arithmetic Skills Evaluation (BASE), a criterion-referenced test. There is a positive correlation between the consistency indices and the total test score across the three grade levels. The indices correlated very highly with each other. (Author/BW)