Trail Making Test (Parts A and B).

TMT

What it measures

Processing speed, visual attention, scanning (Part A); set-shifting/executive flexibility (Part B)

Length and format

2 parts (A: 25 numbered circles; B: 25 alternating number/letter circles); timed. connect-the-dots sequencing (paper/pencil, timed), completion time + errors (performance/ability test)

Language versions

Used worldwide; Part B has letter-based language adaptations (e.g., Color Trails for non-Latin scripts)

Normative data

Normative data for this instrument is held in our reference library. The per-population breakdown is not published here.

Licence

public-domain / open

Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.

Reference

Reitan RM. Percept Mot Skills. 1958;8:271-276. Tombaugh TN. Arch Clin Neuropsychol. 2004;19(2):203-214.