Dynamic Allocation of Responsibility Between Operators With Different Models of System Information Using Computer-Mediated Communication
type: CreativeWork
description: This research focused on the effectiveness of two operator teams for dynamic control of a process simulation. The responsibility for system optimization and failure detection was shared by the operators through computer-mediated communication. System information was displayed to both operators by one of three mental models of the systems: an alphanumeric/separable representation, a graphic/integral system representation, or both representations. The following team-display configurations were used: primary operator with graphic display, support operator with alphanumeric (GRAL); primary operator with alphanumeric display, support operator with graphic (ALGR); both operators with alphanumeric displays (BOAL); both operators with graphic displays (BOGR); and both operators with both displays (BOTH). The results demonstrated a positive relationship between the control of the process and the amount of communication the teams exchanged. Communication dropped significantly during conditions that included system failures. This communication decrease was indicative of the increased workload associated with diagnosing failures. The ability of teams to optimize the system and minimize system takeovers degraded significantly when failures were introduced to the process. While communication may have been effective for controlling the system during normal conditions, when failures were present the teams did not appear to work as well together. Several primary operators commented that they did not utilize the support operator as much during the failure condition as during normal operations. Although there were no differences in the ability of the teams to control the process or detect failures, their ability to utilize information varied as a function of display configuration. Information utilization was significantly better for the ALGR teams. Also, response sensitivities of these teams were significantly higher. This indicates that the ALGR teams used the resources of their part…
abstract: This research focused on the effectiveness of two operator teams for dynamic control of a process simulation. The responsibility for system optimization and failure detection was shared by the operators through computer-mediated communication. System information was displayed to both operators by one of three mental models of the systems: an alphanumeric/separable representation, a graphic/integral system representation, or both representations. The following team-display configurations were used: primary operator with graphic display, support operator with alphanumeric (GRAL); primary operator with alphanumeric display, support operator with graphic (ALGR); both operators with alphanumeric displays (BOAL); both operators with graphic displays (BOGR); and both operators with both displays (BOTH). The results demonstrated a positive relationship between the control of the process and the amount of communication the teams exchanged. Communication dropped significantly during conditions that included system failures. This communication decrease was indicative of the increased workload associated with diagnosing failures. The ability of teams to optimize the system and minimize system takeovers degraded significantly when failures were introduced to the process. While communication may have been effective for controlling the system during normal conditions, when failures were present the teams did not appear to work as well together. Several primary operators commented that they did not utilize the support operator as much during the failure condition as during normal operations. Although there were no differences in the ability of the teams to control the process or detect failures, their ability to utilize information varied as a function of display configuration. Information utilization was significantly better for the ALGR teams. Also, response sensitivities of these teams were significantly higher. This indicates that the ALGR teams used the resources of their part…
author: Terranova, Michele
keywords: Dynamic testing, Computer-mediated communication, System information models, Industrial and Organizational Psychology, Industrial Engineering
date published: 1988-01-01T08:00:00Z
date modified: 2026-07-24T03:35:23Z
provider: Old Dominion University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Old Dominion University