The TMT provides a measure of attention, visual scanning, speed of eye-hand coordination (Part A),
and mental flexibility (Strauss, Sherman, & Spreen, 2007). In addition, Part B assesses the ability to
alternate between stimulus sets and as such is a measure of “executive function” (Mitrushina, et al., 1999).
Performance on the TMT has been obtained for normal and various clinical populations such as Attention Deficit
Disorder ADD), Attention Deficit Hyperactivity Disorder, Alzheimer’s disease, Post Traumatic Stress
Disorder to name a few.