Trusting AI in Competitive Markets

2026-08-26

AI Summary

研究了在寡头市场中，AI定价建议对不同性别组成市场的影响差异，通过实验发现女性市场中AI建议显著提高价格和利润，而男性和混合市场无明显影响。

Abstract

Problem definition: People's trust in AI advice diverges as they use it, deepening for some and eroding for others. We study this divergence in oligopoly pricing, where advice cannot prove itself: rivals' responses decide whether it pays off. Methodology/results: In a laboratory experiment, 273 sellers compete across 91 three-seller markets over 30 rounds; we vary the presence of AI pricing recommendations and the gender composition of the market (female-only, male-only, or mixed). We find that the gender composition of the market shapes how sellers learn from the advice, and where prices settle as a result. In female-only markets, recommendations raise prices by 29% and profits by 39%; in male-only and mixed-gender markets, they have no significant effect. A Non-Homogeneous Hidden Markov Model reveals a composition-specific dynamic association: profitable rounds predict rising adherence to the AI in female-only markets and declining adherence otherwise, a pattern consistent with learned trust and self-serving attribution. The pattern reverses what recent evidence on gender and AI would predict. Managerial implications: We discuss implications for platform governance and regulatory oversight, which should focus not only on the algorithm but on the human side that shapes its effects.

Problem

• AI advice
• oligopoly pricing
• trust divergence
• gender composition

Innovation

• gender composition
• AI pricing recommendations
• Non-Homogeneous Hidden Markov Model
• learned trust