Emulating Aggregate Human Choice Behavior and Biases with GPT Conversational Agents

• URL: http://arxiv.org/abs/2602.05597v1
• Date: Thu, 05 Feb 2026 12:33:05 GMT
• Title: Emulating Aggregate Human Choice Behavior and Biases with GPT Conversational Agents
• Authors: Stephen Pilli, Vivek Nallur,
• Abstract summary: Large language models (LLMs) have been shown to reproduce well-known biases.<n>We adapted three well-established decision scenarios into a conversational setting and conducted a human experiment.<n>We found notable differences between models in how they aligned human behavior.
• Score: 0.48439699124726004
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Cognitive biases often shape human decisions. While large language models (LLMs) have been shown to reproduce well-known biases, a more critical question is whether LLMs can predict biases at the individual level and emulate the dynamics of biased human behavior when contextual factors, such as cognitive load, interact with these biases. We adapted three well-established decision scenarios into a conversational setting and conducted a human experiment (N=1100). Participants engaged with a chatbot that facilitates decision-making through simple or complex dialogues. Results revealed robust biases. To evaluate how LLMs emulate human decision-making under similar interactive conditions, we used participant demographics and dialogue transcripts to simulate these conditions with LLMs based on GPT-4 and GPT-5. The LLMs reproduced human biases with precision. We found notable differences between models in how they aligned human behavior. This has important implications for designing and evaluating adaptive, bias-aware LLM-based AI systems in interactive contexts.

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