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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Visual information can hinder working memory processing of speech.

Sushmit Mishra1, Thomas Lunner, Stefan Stenfelt

  • 1Linnaeus Centre HEAD, Swedish Institute for Disability Research, Department of Behavioural Sciences and Learning, Linköping University, Sweden. sushmit.mishra@liu.se

Journal of Speech, Language, and Hearing Research : JSLHR
|June 21, 2013
PubMed
Summary
This summary is machine-generated.

The new Cognitive Spare Capacity Test (CSCT) assesses executive function in speech processing, showing it differs from working memory capacity. Visual information can impair performance on this auditory task.

Keywords:
auditory processingcognitive spare capacityexecutive functionsfree recallspeech understandingworking memory

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Area of Science:

  • Cognitive Psychology
  • Auditory Perception
  • Neuroscience

Background:

  • Working memory capacity is crucial for processing information.
  • Understanding the cognitive demands of auditory comprehension is essential.
  • Existing tests may not fully capture the executive aspects of listening.

Purpose of the Study:

  • To evaluate the Cognitive Spare Capacity Test (CSCT).
  • To assess working memory for heard speech in audiovisual and auditory-only conditions.
  • To determine if CSCT measures aspects of executive function related to speech processing.

Main Methods:

  • Experiment 1: 20 young adults performed the CSCT and cognitive tests.
  • CSCT involved recalling numbers with induced executive processing at varying memory loads.
  • Experiment 2 used a free recall task to compare with CSCT demands.

Main Results:

  • CSCT performance was sensitive to memory load and linked to executive function, not general working memory.
  • Audiovisual presentation yielded lower CSCT scores but higher free recall.
  • Results suggest CSCT captures executive processing of speech.

Conclusions:

  • The CSCT is a demanding test for processing heard speech.
  • It measures cognitive aspects of listening distinct from working memory capacity.
  • Visual input can impede executive processing of non-degraded speech.