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Related Experiment Videos

Benchmarking a computerized test of immediate verbal memory.

Rochelle E Tractenberg1, Colin E Freas

  • 1Department of Neurology, Georgetown University, Washington, DC 20057, USA. ret7@georgetown.edu

Behavior Research Methods
|January 11, 2008
PubMed
Summary
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We developed an online digit span task, comparable to the traditional verbal version, for assessing verbal span capacity in normal and reading-disabled adults. This digital tool reliably differentiates reading abilities.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Educational Psychology

Background:

  • The traditional verbal digit span task is a widely used measure of working memory capacity.
  • Administering cognitive tasks online offers potential benefits for accessibility and data collection.
  • Previous research has not extensively validated online versions of the digit span task.

Purpose of the Study:

  • To adapt the traditional verbal digit span task for computer and internet administration.
  • To compare the performance and reliability of the online digit span task with the traditional version.
  • To assess the online version's ability to differentiate between normal and reading-disabled adult readers.

Main Methods:

  • Modification of the traditional verbal digit span task for online administration.

Related Experiment Videos

  • Comparison of online and traditional versions in two adult cohorts: normal readers and reading-disabled readers.
  • Application of the Bland-Altman approach to evaluate inter-method agreement and reliability.

    • Main Results:

    • The online digit span task produced comparable results to the traditional version, with slight variations at the extremes of span capacity.
    • The online version reliably differentiated between normal and reading-disabled readers, similar to the verbal version.
    • The Bland-Altman analysis indicated good agreement between the online and traditional digit span measures.

    Conclusions:

    • The online digit span task is a reliable and valid alternative to the traditional verbal version for assessing verbal span capacity.
    • This digital adaptation enhances accessibility for research and potentially clinical applications.
    • The availability of the implementation code facilitates further research and use of this online cognitive assessment tool.