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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Do Learned Alarm Sounds Interfere With Working Memory?

Philippe Lacherez1, Liam Donaldson2, Jennifer S Burt2

  • 1The University of Queensland, Brisbane, Australia p.lacherez@qut.edu.au.

Human Factors
|September 1, 2016
PubMed
Summary
This summary is machine-generated.

Identifying alarm sounds can impair working memory performance. Spoken alarms may interfere with tasks even when participants try to ignore them, suggesting caution in high-demand environments.

Keywords:
auditory alarmsdistractioninterferencelearningworking memory

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Area of Science:

  • Cognitive Psychology
  • Human-Computer Interaction
  • Auditory Perception

Background:

  • Auditory alarms may hinder working memory in complex tasks.
  • Previously, the impact of well-learned alarms on working memory was not well understood.
  • Changing auditory information can disrupt serial recall, even when ignored.

Purpose of the Study:

  • To determine if recognizing or ignoring learned alarm sounds affects working memory performance.
  • To investigate the impact of familiar alarm sounds on cognitive tasks.

Main Methods:

  • Participants learned alarm sounds (melody, pulse, nonword phrase).
  • A digits-forward task was used to assess working memory under three conditions: no alarms, identify alarm, ignore alarm.
  • A control group without alarm training completed baseline and ignore conditions.

Main Results:

  • All alarms impaired serial recall when participants actively identified them.
  • Only spoken nonword alarms interfered with recall when participants attempted to ignore them.
  • Alarm training did not improve performance when ignoring alarms.

Conclusions:

  • Actively identifying alarm sounds can disrupt immediate working memory.
  • Spoken alarms pose a risk to working memory even when ignored.
  • Consider alarm types in environments demanding high working memory capacity, especially avoiding spoken alarms.