Abstract
This study investigates the effects of reduced automation reliability rates on human-automation team performance. Specifically, System Modeling Language (SysML) activity diagrams and Improved Performance Research Integrated Tool (IMPRINT) models are developed for a tablet-based game which includes an automated teammate. The baseline model uses previously collected data from human-in-the-loop experiments where the automated teammate performs with 100% reliability. It is expected that team performance and user trust in automation will be affected if the automation is less reliable. The baseline model is modified to create alternate models that incorporate degraded automation reliability rates from 50% to 90%. This study finds that when automation reliability was 100% the automation was an effective teammate and enabled the human-automation team to achieve statistically improved performance over human-only scenarios. However, at reliability rates of 90% and less, the presence of the automated agent degraded system performance to levels less than achieved in human-only scenarios.
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