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The interactive effect of occupational noise on attention and short-term memory: A pilot study
Raquel Monteiro1, David Tomé2, Paula Neves3
1Department of Environmental Health, Health and Environment Research Center, School of Health, Polytechnic Institute of Porto, Portugal.
Noise & Health
|December 6, 2018
Summary
Occupational noise, even below hearing damage levels, impacts human performance. Higher noise levels with alarms significantly impaired attention and short-term memory in a simulated fast-food environment.
Area of Science:
- Cognitive Psychology
- Occupational Health
- Environmental Psychology
Background:
- Workplace conditions, particularly occupational noise, significantly influence human performance.
- Noise effects can manifest at sound pressure levels below those causing hearing damage, mediated by noise characteristics.
- Research on the specific impact of varying noise conditions on cognitive functions like attention and memory is limited.
Purpose of the Study:
- To investigate the effects of three distinct noise conditions on attention and short-term memory.
- To compare performance under standard conditions, environmental noise without alarms, and environmental noise with alarms.
Main Methods:
- Noise levels were measured in a fast-food establishment and simulated experimentally.
- Three noise conditions were established: 45 dB(A) (standard), 60 dB(A) (environmental), and 68 dB(A) (environmental with alarms).
- Cognitive performance was assessed using serial recall, response inhibition, and Stroop interference tests; subjective perceptions of annoyance, stress, and discomfort were also measured.
Main Results:
- Participants exhibited lower performance, characterized by increased errors and longer reaction times, in the highest noise condition (68 dB(A) with alarms).
- This condition also led to heightened perceptions of discomfort, stress, and annoyance.
- Subjective perceptions of annoyance, stress, and discomfort did not correlate with task performance.
Conclusions:
- Noise conditions in fast-food restaurants, especially those with alarms, can negatively impact worker cognitive performance.
- Further research involving actual workers in their field settings is recommended to validate these findings.
- Understanding these noise-performance relationships is crucial for optimizing workplace environments and employee well-being.
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