TMT-A / B

The test consists of two parts, A and B, and since it is a test of speed, the examiner should stress the importance of time and efficiency.
Part A consists of encircled numbers from 1 to 18 randomly spread across the screen.
The object of the test is for the subject to connect the numbers in order, beginning with 1 and ending with 18, in as little time as possible.

2. Part B is more complex than A because it requires the subject to connect numbers and letters in an alternating pattern (1-A-2-B-3-C, etc.) in as little time as possible.
Because Part B requires more thought processing and attention on behalf of the subject, it takes longer to complete the test; however, if one works on Part B for more than two or three minutes, one will become frustrated, and the frustration may influence performance on other tests