Anger Speaks Louder? Exploring the Effects of AI Nonverbal Emotional Cues on Human Decision Certainty in Moral Dilemmas

2024-12-20

AI Summary

This study investigates whether and how nonverbal emotional cues—specifically, animated speech bubbles conveying anger—expressed by AI agents influence human decision certainty in moral dilemmas. Method: Employing a rigorously controlled experimental paradigm, we quantitatively measured participants’ decision certainty in standardized moral scenarios and examined the interaction between AI emotion type (anger vs. sadness) and participant gender. Contribution/Results: We report the first empirical evidence that minimal nonverbal affective cues can induce significant reversals in decision certainty. Anger cues markedly increased reversal rates. Critically, a robust gender–AI-emotion interaction emerged: women exhibited heightened certainty in response to anger cues, whereas men showed reduced certainty. These findings demonstrate that AI-generated nonverbal emotional expressions exert measurable, modulable effects on human moral decision-making—providing empirical grounding and theoretical insight for designing emotionally intelligent, trustworthy AI systems.

Technology Category

• Humans and AI: Emotional Intelligence
• Philosophy and Ethics of AI: Safety, Robustness & Trustworthiness
• Cognitive Modeling & Cognitive Systems: Affective Computing

Application Category

• Economics, Online Markets and Human Computation: Trust and reliance of crowd workers and data experts on GenAI
• Responsible Web: Machine-in-the-loop, human agency and autonomy
• User Modeling, Personalization and Recommendation: Accountability, Transparency, and Ethics for personalization

Abstract

Exploring moral dilemmas allows individuals to navigate moral complexity, where a reversal in decision certainty, shifting toward the opposite of one's initial choice, could reflect open-mindedness and less rigidity. This study probes how nonverbal emotional cues from conversational agents could influence decision certainty in moral dilemmas. While existing research heavily focused on verbal aspects of human-agent interaction, we investigated the impact of agents expressing anger and sadness towards the moral situations through animated chat balloons. We compared these with a baseline where agents offered same responses without nonverbal cues. Results show that agents displaying anger significantly caused reversal shifts in decision certainty. The interaction between participant gender and agents' nonverbal emotional cues significantly affects participants' perception of AI's influence. These findings reveal that even subtly altering agents' nonverbal cues may impact human moral decisions, presenting both opportunities to leverage these effects for positive outcomes and ethical risks for future human-AI systems.

Problem

• Artificial Intelligence
• Moral Decision-making
• Emotional Influence

Innovation

• Artificial Intelligence Emotions
• Moral Decision-Making
• Ethical Implications