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Measuring Sustained Attention and Perceived Workload.

Cynthia Laurie-Rose1, Lori M Curtindale2, Meredith Frey1

  • 1Otterbein University, Westerville, Ohio.

Human Factors
|February 2, 2017
PubMed
Summary
This summary is machine-generated.

Spatial uncertainty negatively impacts children's vigilance performance and increases perceived workload. Individual differences in field dependence and sex also influence performance and workload, highlighting the need for tailored educational ergonomics.

Keywords:
NASA Task Load Indexeducational ergonomicssustained attentionvigilanceworkload

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Area of Science:

  • Cognitive psychology
  • Human factors engineering
  • Child development

Background:

  • Previous research shows adults experience performance decrements and increased workload under spatial uncertainty.
  • Children have demonstrated an ability to assess workload in previous studies.

Purpose of the Study:

  • To investigate the effects of spatial uncertainty on vigilance performance and perceived workload in elementary school children.
  • To examine the influence of field dependence/independence (FD/I) and sex on these factors.

Main Methods:

  • Children performed a vigilance task with low (center screen) and high (four quadrants) spatial uncertainty.
  • Performance metrics included perceptual sensitivity and response latency variability (RTSD).
  • Workload was assessed using a modified NASA Task Load Index.

Main Results:

  • High spatial uncertainty led to lower perceptual sensitivity, greater RTSD, and higher response criteria in children.
  • Field-dependent children exhibited poorer performance and higher workload than field-independent children.
  • Boys reported higher workload than girls, irrespective of objective performance.

Conclusions:

  • Spatial uncertainty significantly impairs vigilance performance and increases workload in children.
  • Individual differences (FD/I, sex) play a role in performance and workload perception.
  • The findings support the development of educational ergonomics tools to identify children under high workload.