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A Sequential Sentence Paradigm Using Revised PRESTO Sentence Lists.

Andrea R Plotkowski1, Joshua M Alexander1

  • 1Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN.

Journal of the American Academy of Audiology
|August 27, 2016
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Summary
This summary is machine-generated.

A new sequential sentence test effectively measures cognitive effort in speech recognition, revealing that working memory impacts performance, especially in noisy conditions with multitalker babble.

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Area of Science:

  • Auditory Neuroscience
  • Cognitive Psychology
  • Speech-Language Pathology

Background:

  • Challenging listening requires cognitive resources for speech processing.
  • Traditional speech tests don't capture individual cognitive effort differences.
  • A sequential sentence paradigm was developed to assess verbal processing demands.

Purpose of the Study:

  • Establish feasibility, validity, and list equivalency of the sequential sentence paradigm.
  • Evaluate effects of masker type, signal-to-noise ratio (SNR), and working memory (WM) on performance.
  • Investigate cognitive load in speech recognition tasks.

Main Methods:

  • Developed a sequential sentence task involving immediate and delayed recall.
  • Validated 18 statistically equivalent sentence lists from the PRESTO test.
  • Administered tasks to 53 young, normal-hearing adults, varying masker type and SNR.
  • Assessed working memory using the Verbal Letter Monitoring task.

Main Results:

  • The sequential sentence paradigm demonstrated feasibility and list equivalency.
  • Immediate sentence recall showed no significant cognitive load effect.
  • Multitalker babble was equally detrimental as steady noise for immediate recall.
  • Delayed recall was disproportionately harder in multitalker babble for low-working memory individuals.

Conclusions:

  • The sequential sentence paradigm is a viable tool for assessing speech recognition cognitive load.
  • Individual working memory capacity significantly influences performance, particularly in complex listening environments.
  • This paradigm has potential applications in evaluating signal-processing techniques for clinical populations.