Please use this identifier to cite or link to this item:

TitleRepeated assessment and practice effects of the written symbol digit modalities test using a short inter-test interval
Author(s)Pereira, D. R.
Costa, Patrício
Cerqueira, João José
Practice effects
Repeated assessment
Test-retest reliability
Alternate forms
Issue date2015
PublisherOxford Univ Press
JournalArchives of Clinical Neuropsychology
CitationPereira, D. R., Costa, P., & Cerqueira, J. J. (2015). Repeated Assessment and Practice Effects of the Written Symbol Digit Modalities Test Using a Short Inter-Test Interval. Archives of Clinical Neuropsychology, 30(5), 424-434. doi: 10.1093/arclin/acv028
Abstract(s)The Symbol Digit Modalities Test (SDMT) is a widely used instrument to assess information processing speed, attention, visual scanning, and tracking. Considering that repeated evaluations are a common need in neuropsychological assessment routines, we explored test–retest reliability and practice effects of two alternate SDMT forms with a short inter-assessment interval. A total of 123 university students completed the written SDMT version in two different time points separated by a 150-min interval. Half of the participants accomplished the same form in both occasions, while the other half filled different forms. Overall, reasonable test–retest reliabilities were found (r = .70), and the subjects that completed the same form revealed significant practice effects (p < .001, dz = 1.61), which were almost non-existent in those filling different forms. These forms were found to be moderately reliable and to elicit a similar performance across participants, suggesting their utility in repeated cognitive assessments when brief inter-assessment intervals are required.
Publisher version
AccessOpen access
Appears in Collections:ICVS - Artigos em Revistas Internacionais com Referee

Files in This Item:
File Description SizeFormat 
pereira et al, arch clin neuropsychol.pdf298,15 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID