K-FAST and WRAT-3: are they really different?

The Kaufman Functional Academic Skills Test (K-FAST) was introduced as an alternative to the Wide Range Achievement Test - Revision 3 (WRAT-3). The goal was to provide a measure that would help determine whether individuals have the adequate reading and mathematical skills to function appropriately in society. Fifty-one individuals from neuropsychologically diverse populations were tested using the K-FAST, WRAT-3, and Kaufman Brief Intelligence Test (K-BIT). Strong correlations were found between the various raw and standard scores of the K-FAST and WRAT-3, indicating that the administration of both tests is redundant; and scores on both tests also correlate well with performance on the K-BIT.