The objective of this study was to determine how a vocal response mode compared to a manual response mode for data entry in a fighter cockpit simulator. Specifically, both vocal and manual response modes were compared in single and dual task conditions on the basis of pilot flight performance, response time, and errors while accomplishing several communication, navigation, and weapons tasks. The results indicated that the manual response mode was more effective than the vocal response mode in terms of response time data; however, the vocal response mode was more effective in terms of flying performance data.
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