Trust Interplay: Robot Performance Influences Cognitive But Not Affective Trust

Cognitive and affective trust are fundamental elements in human-robot interactions. Previous research suggests that robots' affective behaviors related to affective trust can also impact cognitive trust. In this work, we explored whether the opposite influence also exists and whether robots' cognitive behaviors related to cognitive trust can also impact affective trust. Our results revealed that the robot's cognitive capabilities significantly impacted cognitive trust but did not influence affective trust. Participants in the High Competence Robot condition reported higher cognitive trust scores and were more likely to trust the robot's suggestions compared to the Low Competence Robot and Baseline conditions. We did not observe any differences in affective trust, and almost all participants in all conditions reported low affective trust. We suggest that while robot cognitive performance can effectively build cognitive trust, comprehensive trust development may require affective-related behaviors.