Evaluating the Use of Parotid Fluid Analysis as a Measure of Task Difficulty.
ARMY MATERIEL COMMAND TEXARKANA TEX INTERN TRAINING CENTER
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The purpose of the paper was to determine the usefulness of the parotid fluid analysis technique in measuring mental stress. Ten subjects were used in the experimental portion of this work. Three levels of stress were set up. A low stress level was taken with the subjects at rest. The medium and high stress levels were set up using 30 and 60 revolutions per minute respectively on a rotary pursuit tracking task. Parotid fluid was collected for a 30 minute period at each of the three stress levels for each subject. The chemical analysis of the parotid fluid was carried out to determine the concentrations of corticosteroids 17-OHCS in the parotid fluid samples. Mathematical analysis of the data indicated that there was no change in the 17-OHCS level as a result of increased stress levels. The results were attributed to using a tracking task lacking sufficient difficulty to produce mental stress. Author