The CTMT2 was normed on a sample of 1,904 participants from 38 states. Its raw scores (the time it takes to complete each trail in seconds) are converted to T scores having a mean of 50 and a standard deviation of 10. The three composite scores can be derived by pooling the T scores from the individual trails. The Examiner’s Manual includes a discussion of the test’s theoretical and research-based foundation, standardization, administration and scoring procedures, normative tables, and extensive reliability and validity data.
The CTMT2’s internal consistency reliability coefficients are .89 for the Inhibitory Control Index, .79 for the Set-Shifting Index, and .92 for the Total Composite Index. Validity studies demonstrate the test’s ability to differentiate participants with a history of traumatic brain injury from those without even in post-rehabilitation samples, where use of just the Total Composite Index (TCI) resulted in sensitivity of .73, specificity of .71, and a ROC/AUC of .82.
COMPLETE CTMT2 KIT INCLUDES: Examiner’s Manual and 10 Record Booklets, all in a sturdy storage box. ©2020