In a previous study, we found that users? trust in and reliance on an individual combatidentification system is influenced by the system?s reliability as well as users? awarenessof the reliability. In this exploratory study we test the effects of design features of thesame system on users? target identification performance as well as their trust in and relianceon the system. In a simulated task environment, we varied the automation activationmode (i.e., automatic vs. manual) and the presentation of the “unknown” feedback(i.e., explicit vs. implicit). Participants responded fastest when the “unknown” feedbackwas provided automatically with explicit indication. In addition, participants trusted theexplicit “unknown” feedback more than the implicit feedback. However, neither reliancebehavior nor identification accuracy changed significantly across conditions. This studyhas implications for the design of combat identification systems to achieve appropriatetrust. In addition, the results suggest that when studying trust in automation using a simulation,it is important to simulate the design features.
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