The Relationship Between Effort Rating and Performance in a Critical Tracking Task

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Authors: Jacqueline Rehmann
Bruce L. Rosenberg
Earl S. Stein

Rosenberg, B.L., Rehmann J., & Stein, E.S. (1982). The relationship between effort rating and performance in a critical tracking task (DOT/FAA/CT-82/66). Washington, DC: Federal Aviation Administration Office of Systems Engineering Management.


This report documents the results of a preliminary evaluation of a Pilot Objective/Subjective Workload Assessment Technique (POSWAT). The study employed a critical tracking task, in which 24 subjects (pilots and non-pilots) viewed an analog display of the error between operator input and system output while correcting with opposite pressure on a joystick. The purpose was to determine if there was a relationship between participant responses on a 10-point scale administered during task performance and tracking task difficulty.

It is generally concluded that POSWAT used for measuring effort rating and rating delay on a regular basis during this experiment is minimally intrusive, is informative, and merits further evaluation in a cockpit environment.

Updated: May 04, 2012 11:21 AM