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REPORT DATE
JUN 19982. REPORT TYPE 3. DATES COVERED We conducted a study to examine the effects of target cueing and conformality with a hand-held or head-mounted display to determine their effects on visual search tasks requiring focused and divided attention. Eleven military subjects were asked to detect, identify, and give azimuth information for targets hidden in terrain presented in a simulated far domain environment while performing a monitoring task in the near domain using either a helmetmounted display or hand-held display. The results showed that the presence of cueing aided the target detection task for expected targets but drew attention away from the presence of unexpected targets in the environment representing a form of cognitive tunneling. This effect was mediated by the display platform used, such that cognitive tunneling was reduced when subjects were using the hand-held display. Additionally, the results showed that the presence of cueing hindered performance on the secondary task. 1
ABSTRACTWe conducted a study to examine the effects of target cueing and conformality with a hand-held or head-mounted display to determine their effects on visual search tasks requiring focused and divided attention. Eleven military subjects were asked to detect, identify, and give azimuth information for targets hidden in terrain presented in a simulated far domain environment while performing a monitoring task in the near domain using either a helmetmounted display or hand-held display. The results showed that the presence of cueing aided the target detection task for expected targets but drew attention away from the presence of unexpected targets in the environment representing a form of cognitive tunneling. This effect was mediated by the display platform used, such that cognitive tunneling was reduced when subjects were using the hand-held display. Additionally, the results showed that the presence of cueing hindered performance on the secondary task.
