Two experiments were performed involving the concurrent presentation of two messages, one auditory and one visual, to human subjects. These messages were followed by a question requiring information from them. The results indicated that biomodally-presented information can be integrated for decision making. There was, however, no evidence of an advantage to bimodal presentation as a means of unburdening an overloaded sense. The implications of the results for displays and communications in complex control centers are discussed and directions for future research are suggested.
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