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This paper outlines a method for combining alternatives for each of the factors bearing on a design decision and rank ordering all possible configurations of alternatives. The method permits the rank orderings to be based on the judgments of a relatively large number of persons having diverse points of view and experience but concerned with a common design problem. This method was used to rank order a large number of alternative reporting techniques that might be utilized within a context of a computer-based tactical image interpretation facility for each of four man-computer communication tasks. Results from the application of this method were compared with a scaling of stimuli using Thurstone's law of categorical judgment technique and with the results of a related experimental study.

Two experimental studies are reported that were intended to evaluate alternative man-computer communication techniques within the context of a computer-based image interpretation facility. The first experiment, comparing five different data entry procedures, indicated that, although a procedure requiring the interpreter to enter report data directly using a teletype keyboard resulted in the shortest overall throughput time, a procedure involving message composition by the image interpreter with subsequent transcription by a communicator minimizes the time spent by the interpreter in report generation and maximizes the time available for the detection and identification of targets on aerial imagery. The second experiment evaluating alternative word form-data entry format combinations, showed no differences among the six combinations studied.