A study of 3,132 participants shows that access to AI assistants nearly eliminates the tendency to suspend judgment, even when the AI provides incorrect answers. Participants answered significantly more questions but achieved only one-third the accuracy of those without AI, while their confidence levels nearly doubled. This effect persisted regardless of whether the advice was actively requested or passively displayed, indicating a strong bias toward relying on AI fluency over accurate uncertainty.
- AI fluency overrides human uncertainty, reducing 'I don't know' responses even with wrong advice.
- Accuracy drops to one-third when AI is available, despite increased response volume.
- Confidence nearly doubles with AI assistance, masking the severe drop in correctness.
- The suppression effect holds for both active requests and passive display of AI advice.