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Protocol - Executive Function - Direct Assessment - Adult

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Protocol Name from Source:

The Trail Making Test

Availability:

Proprietary

Description:

The Trail Making Test (TMT) is an interviewer-administered, two-part test that requires the respondent to organize numerical and alphabetical sequences that are randomly distributed on a piece of paper. The protocol for TMT includes instructions for correcting mistakes and instructions for scoring based on speed and accuracy.

Protocol:

Trail Making Test, Part A

The examiner first shows the respondent a sample test that has numbers 1-8 distributed in random order. The examiner demonstrates the task and lets the respondent practice connecting the numbers in increasing order. The examiner then hands the respondent the actual test which has the numbers 1-25 distributed in random order and asks the respondent to connect them in increasing order as fast as possible without raising the pen from the paper. Respondents are scored based on speed and accuracy.

Trail Making Test, Part B

The examiner first shows the respondent a sample test that has numbers 1-4 and letters A-D distributed in random order. The examiner demonstrates the task and lets the respondent practice connecting the numbers to letters (one to A, A to two, etc.) in increasing order. The examiner then hands the respondent the actual test which has the numbers 1-13 and letters A-L distributed in random order and asks the respondent to connect them in increasing order as fast as possible without raising the pen from the paper. Respondents are scored based on speed and accuracy.

Personnel and Training Required

Personnel should be trained by a licensed neuropsychologist or other trained medical professional experienced with the Trail Making Test. Additionally, investigators are encouraged to have quality control procedures (such as videotaping sessions, etc.) in place to maintain consistency across examiners.

Equipment Needs

The interviewer will need a copy of the test that includes the cue cards with the sequence of numbers and letters and the scoring instructions.

Requirements

Requirement CategoryRequired
Average time of greater than 15 minutes in an unaffected individualNo
Major equipmentNo
Specialized requirements for biospecimen collectionNo
Specialized trainingNo

Mode of Administration

Self-administered

Life Stage:

Adolescent, Adult, Senior

Specific Instructions:

Whereas the Trail Making Test (TMT) has two parts (Parts A and B), the PhenX Neurology Working Group recommends that Part B be used to measure executive function in adults.

The TMT is a proprietary, fee-based instrument that is available from Reitan Neuropsychology Lab, Inc.

Research Domain Information

Release Date:

November 28, 2017

Definition

An interviewer-administered test to measure a respondent’s system of high-level cognitive functions such as abstract thinking, rule acquisition, cognitive flexibility, and goal-oriented behavior.

Purpose

This measure tests a respondent’s total range of function with respect to executive function. It is therefore more specific and sensitive than a measure of global mental status and can be used to assess major problems in executive function as well as minor variations that may be a consequence of normal development and aging.

Selection Rationale

The Trail Making Test was selected because it is a standard, widely used, validated protocol.

Language

English

Standards

StandardNameIDSource

Process and Review

[link[phenx.org/node/103|Expert Review Panel 4]] (ERP 4) reviewed the measures in the Neurology, Psychiatric, and Psychosocial domains.

Guidance from ERP 4 included the following:

  • Added new measure
  • No changes to existing protocol

Source

Reitan Neuropsychology Lab. The Adult Trail Making Test (TMT).

The TMT is a proprietary instrument and can be obtained through:

Reitan Neuropsychology Lab
P.O. Box 66080
Tucson, AZ 85728-6080
USA
Telephone: (520) 577-2970
Fax: (520) 577-2940

General References

None

Protocol ID:

131602

Variables:

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