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The lightweight, fast-moving design proposed for operations occurring within 5-10 years requires Soldiers riding as passengers in moving vehicles to perform operations previously conducted only in stationary environments. Operating under motion conditions can lead to performance degradations associated with physical perturbations and conflicting sensory inputs, which are associated with motion sickness. Full-motion simulators offer the flexibility to model and rapidly test multiple vehicle profiles and crew station design configurations while providing increased experimental control. However, a major concern is whether or not a simulator can evoke the behavioral responses observed in real life. This validation study compares the results of two complementary experiments that examined task performance while operators underwent either simulated or actual vehicle motion. Driving performance indicated differences between the experiments for several measures, while motion sickness questionnaire subscales indicated similar patterns of results across both experiments. Overall, support was found for both absolute and relative validity of using the simulator to examine issues related to motion sickness, but not for performance measures. Our results support the premise that simulators can be valuable for inducing specific types of real-life behaviors that will be inherent to designs proposed for future forces.
Approved for public release; distribution is unlimited.ii Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. REPORT DOCUMENTATION PAGE
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