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Related Experiment Video

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Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm

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Oculometric Function More Strongly Predicts Working Memory than Stress in Military Officers.

Mollie McGuire¹, Neda Bahrani², Quinn Kennedy²

¹Department of Information Sciences, Naval Postgraduate School, Monterey, CA 93943, USA.

Journal of Eye Movement Research

|May 27, 2026

Summary

Military officers

Keywords:

cognition military oculometrics stress

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Area of Science:

Cognitive psychology
Military science
Neuroscience

Background:

Working memory and visual attention are crucial for military tasks.
Stress typically impairs these cognitive functions in civilians.
Limited research exists on stress, working memory, and visual attention in military officers.

Purpose of the Study:

To investigate the relationship between stress, working memory, and visual attention in military officers.
To explore potential oculometric indicators of cognitive function under stress.

Main Methods:

Thirty-three military officers participated.
Cognitive assessment included the n-back task for working memory and executive function.
Oculometric assessment used a modified step-ramp test to measure visual tracking.
Perceived stress was measured using the Perceived Stress Questionnaire (PSQ).

Main Results:

Oculometric performance and self-reported stress independently predicted n-back accuracy, explaining 67% of the variance.
Specific oculometric metrics (directional anisotropy, directional noise, smooth pursuit) were key.
The link between oculometric performance and stress was influenced by sex differences.

Conclusions:

Oculometric performance is strongly associated with working memory accuracy in military officers.
Eye-tracking metrics show promise as indicators of cognitive function in operational military settings.
Findings have implications for assessing military cognitive readiness.