A study of the state-trait anxiety inventory and the assessment of stress under simulated conditions
Federal Aviation Administration, Office of Aviation Medicine, 1972 - 5 pages
One approach to the measurement of stress in ATC and other aviation personnel is through assessment of anxiety. One means of accomplishing this is to use the State-Trait Anxiety Inventory (STAI), a 40-item self-report technique. In order to determine if stress can be simulated on the STAI, the responses of 283 subjects obtained under normal instructions were compared to their responses obtained when asked to make it appear as if they were experiencing a high degree of stress. It was found that while both the A-State (current anxiety level) and A-Trait (anxiety proneness) scales were influenced by this response set, the effect was greater for the A-State scale. Using the A-State raw score alone as an index of bias resulted in 95.7% accuracy in protocol classification. A two-step procedure, using eight items and the A-State raw score, was subsequently devised which reduced false-positive classifications of legitimate psychiatric patient profiles from 49% to 38% with no reduction in discriminatory power for 'normal' records. The application of the index to clinical and research settings in aviation was discussed. (Author).
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283 subjects obtained 40-item self-report technique A-State current anxiety A-State raw score A-State scale A-Trait anxiety proneness accuracy in protocol Anxiety Inventory STAI Anxiety under normal assessment of anxiety ASSESSMENT OF STRESS ATC and Descriptors aviation personnel aviation was discussed bias resulted Civil Aeromedical Institute classifications of legitimate CONDITIONS by Roger current anxiety level determine if stress devised which reduced discriminatory power effect was greater effects of biasing eight items Federal Aviation Administration index of bias index to clinical instructions were compared legitimate psychiatric patient measurement of stress normal instructions obtained when asked Office of Aviation Oklahoma City periencing a high power for normal profiles from 49 protocol classification psychiatric patient profiles reduced false-positive classifications responses of 283 resulted in 94.7 scales were influenced settings in aviation SIMULATED CONDITIONS STATE-TRAIT ANXIETY INVENTORY State-Trait Personnel Anxiety stress in ATC STRESS UNDER SIMULATED subsequently devised susceptible to effects tion in discriminatory two-step procedure