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Related Concept Videos

Multiple Comparison Tests01:13

Multiple Comparison Tests

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Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
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Updated: May 2, 2026

Revised and Neuroimaging-Compatible Versions of the Dual Task Screen
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The Dual Task Ball Balancing Test and Its Association With Cognitive Function: Algorithm Development and Validation.

Barry Greene1,2, Sean Tobyne1, Ali Jannati1

  • 1Linus Health, Boston, MA, United States.

Journal of Medical Internet Research
|August 19, 2024
PubMed
Summary
This summary is machine-generated.

A new digital dual-task ball balancing test safely assesses cognitive reserve in older adults. This seated assessment accurately identifies cognitive impairment and functional decline, offering a portable tool for home use.

Keywords:
AlzheimerMCIbalancecognitive functioncognitive impairmentdementiadual taskinertial sensorsmHealthmotorolder adultstablet

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Area of Science:

  • Gerontology
  • Neuroscience
  • Digital Health

Background:

  • Dual task paradigms assess cognitive reserve and resource allocation.
  • Traditional dual tasks (gait/balance + cognitive) pose physical risks for older adults.
  • Need for safe, accessible cognitive assessments in aging populations.

Purpose of the Study:

  • Introduce a novel, digital dual-task assessment combining motor and cognitive challenges.
  • Evaluate the safety and efficacy of a seated ball balancing and backward digit span task.
  • Assess its utility in identifying cognitive impairment and functional decline in older adults.

Main Methods:

  • A seated digital dual-task (ball balancing + backward digit span task [BDST]) was developed.
  • Performance measured via tablet inertial sensors under single- and dual-task conditions.
  • Evaluated in 375 older adults, including those with cognitive impairment and physical limitations.

Main Results:

  • The task was safely completed by all participants, including those with mild cognitive impairment (MCI) and Alzheimer disease-related dementia (ADRD).
  • Performance significantly decreased under dual-task conditions, correlating with cognitive and functional impairments.
  • Cognitive status was classified with >70% accuracy using machine learning models.

Conclusions:

  • The dual task ball balancing test serves as a digital cognitive assessment for cognitive reserve.
  • Its portability, simplicity, and safety make it suitable for unsupervised home cognitive assessments.
  • This digital tool aids in early detection and monitoring of cognitive decline in older adults.