Discrepancy analysis and Australian norms for the Trail Making Test
Article
Article Title | Discrepancy analysis and Australian norms for the Trail Making Test |
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ERA Journal ID | 6181 |
Article Category | Article |
Authors | Senior, Graeme (Author), Piovesana, Adina (Author) and Beaumont, Patricia (Author) |
Journal Title | The Clinical Neuropsychologist |
Journal Citation | 32 (3), pp. 510-523 |
Number of Pages | 14 |
Year | 2018 |
Place of Publication | United States |
ISSN | 1385-4046 |
1744-4144 | |
Digital Object Identifier (DOI) | https://doi.org/10.1080/13854046.2017.1357756 |
Web Address (URL) | https://www.tandfonline.com/doi/full/10.1080/13854046.2017.1357756 |
Abstract | Objective: Discrepancy analyses refer to comparison methods that evaluate the relationship or differences between two measures in the same individual. A common type of discrepancy analysis involves the comparison of two trials within a measure, such as, Trails A and B of the Trail Making Test (TMT). The TMT is well-suited to this role as the two measures are highly correlated, assess similar underlying constructs, and most importantly demonstrate differential vulnerability to the impact of pathology. While the inclusion of these types of data in the form of difference scores or ratios has become more frequent, this information has been presented only for demographically adjusted subgroups and has not taken into account the level of performance of the comparison trial, Trails A. Method: The role and advantages of discrepancy analysis with the TMT stratified by level of Trails A performance were demonstrated with an Australian normative sample of 647 participants and a heterogeneous clinical sample consisting of 2,292 Australian and U.S. cases. Results: The ability to differentiate between the influence of slowed visual scanning and/or graphomotor speed, and reduced mental flexibility was demonstrated by applying the normative data to clinical case discrepancies. The importance of accounting for the variability in discrepancy scores associated with the level of performance of Trails A was also highlighted. Conclusion: A simple, efficient, and effective approach to examining the basis for differences between TMT-A and TMT-B performances is provided to examine the relative contributions of perceptual/motor abilities, and mental flexibility. |
Keywords | discrepancy analysis; Trail Making Test; norms; neuropsychology |
ANZSRC Field of Research 2020 | 529999. Other psychology not elsewhere classified |
520105. Psychological methodology, design and analysis | |
Byline Affiliations | Department of Psychology |
School of Psychology and Counselling | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q45x1/discrepancy-analysis-and-australian-norms-for-the-trail-making-test
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