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Reliability and construct validity of a revised Baycrest Multiple Errands Test.

Amanda J Clark1, Nicole D Anderson2,3, Emily Nalder2,4,5

  • 1a Department of Psychology , University of Tennessee at Chattanooga , Chattanooga , USA.

Neuropsychological Rehabilitation
|December 17, 2015
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Summary
This summary is machine-generated.

The revised Baycrest Multiple Errands Test (BMET-R) and its alternate form effectively distinguish individuals with acquired brain injury (ABI) from healthy controls. However, these versions do not fully capture real-world executive function deficits.

Keywords:
CognitionExecutive functionMultiple Errands TestStrokeTraumatic brain injury

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Area of Science:

  • Neuropsychology
  • Cognitive Rehabilitation
  • Clinical Assessment

Background:

  • Ecologically valid assessments of executive function are limited.
  • The Baycrest Multiple Errands Test (BMET) shows potential for identifying executive impairment.

Purpose of the Study:

  • Develop a revised BMET (BMET-R) to enhance discrimination between patients and healthy individuals.
  • Create an alternate form of the BMET-R for repeated testing.
  • Evaluate the ecological validity and discriminative ability of the BMET-R and its alternate form.

Main Methods:

  • 16 individuals with acquired brain injury (ABI) and 16 healthy controls completed neuropsychological assessments, questionnaires, and both BMET-R versions.
  • Participants with ABI and healthy controls performed the BMET-R and its alternate form in a counterbalanced order.
  • Performance metrics included task completion, omissions, errors, rule breaks, and inefficiencies.

Main Results:

  • Participants with ABI demonstrated significantly more omissions, rule breaks, and inefficiencies than healthy participants on both BMET-R versions.
  • High correlations were found between the two BMET-R versions for most performance metrics.
  • Few correlations were observed between BMET-R performance and measures of real-world executive dysfunction.

Conclusions:

  • The BMET-R and its alternate form successfully differentiate between individuals with ABI and healthy controls.
  • While correlated, the two BMET-R versions do not identically assess executive deficits, suggesting limitations in capturing real-world executive function.
  • Caution is advised when developing and validating alternate forms of performance-based assessments for ecological validity.