Feeling the Facts: Real-time wearable fact-checkers can use nudges to reduce user belief in false information

Paper Title

Feeling the Facts: Real-time wearable fact-checkers can use nudges to reduce user belief in false information

Publication Info

• Topic area: Real-time wearable systems for misinformation detection and user belief correction.
• Keywords: misinformation, wearable technology, fact-checking, haptic feedback, real-time intervention, user behavior, cognitive processing, trust calibration, just-in-time adaptive interventions.

Background and Problem

• Problem / challenge: Misinformation spreads rapidly in real-time interactions, such as conversations or media consumption, where pausing to verify claims is impractical. Existing fact-checking interventions are often screen-bound, delayed, or require user-initiated action, leaving a gap for timely, subtle, and context-integrated solutions.
• Significance: Misinformation can influence beliefs and decisions, even after correction. Timely interventions are critical to disrupt the embedding of false claims into mental models and to encourage reflective reasoning.
• Motivation and related work: Prior research highlights the importance of timing in misinformation correction, the potential of just-in-time adaptive interventions (JITAIs), and the effectiveness of subtle, body-integrated cues. However, challenges remain in balancing accuracy, latency, user trust, and privacy in real-time, wearable systems.

Solution

• Proposed approach: A wearable fact-checking prototype called "Fact-Nudger" that delivers real-time haptic nudges and glanceable explanations when potential misinformation is detected in media content.
• Novelty:
  1. Introduction of subtle haptic feedback paired with glanceable explanations for in-situ truth discernment.
  2. Evidence that real-time wearable feedback improves truth discernment and verification behavior while preserving belief in accurate information.
  3. Insights into user trust, over-reliance, and design considerations for wearable fact-checking systems.
• Procedure and key techniques:
  • A smartwatch-based prototype was developed to provide haptic nudges and brief textual explanations when false claims were detected in pre-curated video content.
  • A controlled study with 34 participants compared the wearable intervention to a no-support baseline, measuring belief changes, verification behaviors, and cognitive workload.
  • Simulated AI errors (false positives and false negatives) were introduced to study user responses to system inaccuracies.

Results

• Concrete findings:
  • Belief in false claims significantly decreased in the wearable condition (mean reduction: -1.23) compared to the no-wearable condition (mean change: +0.31).
  • Confidence in rejecting false claims was higher in the wearable condition (mean: 5.72) than in the no-wearable condition (mean: 5.31).
  • Verification activities were more frequent in the wearable condition (mean: 10.47 activities) than in the no-wearable condition (mean: 5.26 activities).
• Advantage over baselines:
  • The wearable system reduced belief in false claims without increasing cognitive load or undermining belief in true claims.
  • Participants engaged more in verification behaviors with the wearable, without a significant increase in time spent on verification.
• Experiments / evaluation:
  • Participants watched pre-verified videos with and without the wearable intervention in a counterbalanced within-subjects design.
  • Belief, confidence, and verification behaviors were measured through questionnaires, video recordings, and manual logging.
  • Statistical tests (e.g., Wilcoxon signed-rank, t-tests) confirmed significant differences between conditions.
• Limitations and future work:
  • The study used a Wizard-of-Oz prototype in a controlled environment, limiting ecological validity.
  • Real-world challenges such as noisy environments, latency, and speech recognition accuracy were not addressed.
  • Future work should test end-to-end systems in naturalistic settings, explore long-term effects, and evaluate diverse populations.

Summary

This study introduces "Fact-Nudger," a wearable fact-checking prototype that uses haptic nudges and glanceable explanations to reduce belief in false claims and promote verification behaviors. Controlled experiments demonstrated significant reductions in belief in misinformation and increased user engagement in fact-checking activities without adding cognitive burden. However, over-reliance on the system and trust calibration remain key design challenges. The findings highlight the potential of wearable, just-in-time interventions to support truth discernment in real-time interactions, with implications for future development of transparent, user-centered, and scalable misinformation correction tools.