Initial Development of a Modified Trail Making Test for Individuals with Impaired Manual Functioning

Area of Science:

• Neuropsychology
• Clinical Psychology
• Cognitive Assessment

Background:

• The standard Trail Making Test (TMT) is a valuable tool for detecting brain damage.
• A limitation of the TMT is its requirement for manual dexterity, hindering its use in individuals with manual impairments.

Purpose of the Study:

• To develop and evaluate a non-manual Trail Making Test (NMTMT) suitable for individuals with manual impairments.
• To assess the NMTMT's correlation with the standard TMT and other neuropsychological measures.

Main Methods:

• Three studies involving 200 university students were conducted.
• The NMTMT uses color stimuli for oral reporting of number (Part A) and number-letter (Part B) sequences.
• Correlations between NMTMT, TMT, and other neuropsychological tests were analyzed.

Main Results:

• The NMTMT demonstrated a moderate correlation with the standard TMT.
• Both tests showed similar patterns of association and nonassociation with other neuropsychological measures.
• Low NMTMT scores predicted significantly lower TMT Part B scores, indicating retained clinical relationships.

Conclusions:

• The NMTMT shows potential as a viable substitute for the TMT when manual impairment is present.
• The NMTMT effectively retains the clinically significant relationship between Part A and Part B.
• This non-manual assessment tool expands the utility of TMT-like evaluations in diverse patient populations.