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ERIC Number: ED097900
Record Type: Non-Journal
Publication Date: 1974-Jun
Reference Count: N/A
Quantitative Modeling of Human Performance in Information Systems. Technical Research Note 232.
Baker, James D.
Ergonomics, v13 n6 p645-64 1970
A general information system model was developed which focuses on man and considers the computer only as a tool. The ultimate objective is to produce a simulator which will yield measures of system performance under different mixes of equipment, personnel, and procedures. The model is structured around three basic dimensions: (1) data flow and processing, (2) task analysis, and (3) outside sources of variation in the system. Five basic and critical functional areas represented in the model are screening incoming messages, transforming messages to computer format, inputting messages, assimilating data displayed, and deciding on courses of action based on information obtained. The impact of human performance in the model is reflected in measures of system performance (throughness of information and responsiveness to the user need) and quality of information (completeness and accuracy). The model at present stage is a tested implement for human factors experimentation on the Army's information processing systems. The approach provides integrative coverage of all aspects and relationships of the man-machine interface and ties them to accept system performance measures. (Author)
Publication Type: Reports - Research
Education Level: N/A
Authoring Institution: Army Behavioral Science Research Labs., Arlington, VA.