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Mental Load and Fatigue Assessment Instruments: A Systematic Review.

Jesús Díaz-García¹, Inmaculada González-Ponce², José Carlos Ponce-Bordón¹

¹Faculty of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain.

International Journal of Environmental Research and Public Health

|January 11, 2022

Summary

This review identifies instruments for measuring mental load and fatigue. Most studies use subjective scales, highlighting a need for more objective and combined approaches in performance and accident research.

Keywords:

assessment procedure cognitive fatigue measurement mental health validity

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Area of Science:

Psychology
Human Factors
Occupational Health

Background:

Mental load and fatigue significantly impact performance and increase accident risk across various activities.
A comprehensive systematic review detailing validated instruments for quantifying mental load and fatigue is currently unavailable.
Understanding these factors is crucial for enhancing safety and efficiency in demanding tasks.

Purpose of the Study:

To systematically review and classify validated instruments used for quantifying mental load and fatigue.
To identify the primary methods and derivations employed in assessing these cognitive states.
To highlight gaps in current research regarding combined measurement approaches.

Main Methods:

Systematic literature search across major databases (PubMed, WOS, Scopus, SPORTDiscus, PsycINFO) up to September 2020.
Inclusion of studies utilizing instruments to analyze mental load and fatigue.
Quality assessment of selected studies using a standardized checklist.

Main Results:

A total of 40 papers were included in the review.
Subjective scales were the predominant method (75%) for quantifying mental load and fatigue.
Behavioral (n=5) and objective techniques (n=5) were less frequently employed.
Limited research exists on combining different measurement derivations for mental load and fatigue analysis.

Conclusions:

The current landscape of mental load and fatigue assessment heavily relies on subjective measures.
Further research incorporating objective techniques and combined measurement batteries is essential for a deeper understanding of underlying brain processes.
Developing comprehensive test batteries that integrate subjective, behavioral, and objective derivations is recommended for future studies.