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Trinh,T.K.;Jia,G.;Cheng,C.;Ni,C. (2025). Behavioral Responses to AI Financial Advisors: Trust Dynamics and Decision Quality Among Retail Investors. Applied and Computational Engineering,144,69-79.
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Behavioral Responses to AI Financial Advisors: Trust Dynamics and Decision Quality Among Retail Investors

Toan Khang Trinh *,1, Guancong Jia 2, Caiqian Cheng 3, Chunhe Ni 4
  • 1 Computer Science, California State University Long Beach, CA, USA
  • 2 Computer Science, Rice University, TX, USA
  • 3 Computer Science, University of California, San Diego, CA, USA
  • 4 Computer Science, University of Texas at Dallas, Richardson, TX, USA

* Author to whom correspondence should be addressed.

https://doi.org/10.54254/2755-2721/2025.21859

Abstract

This study examines trust dynamics and decision quality among retail investors interacting with AI financial advisors. Using a convergent parallel mixed methods design incorporating surveys (n=428) and interviews (n=42), we investigate how trust forms, evolves, and influences investment outcomes. Results demonstrate that institutional affiliation (β=0.68, p<0.001) and perceived competence (β=0.57, p<0.001) significantly influence initial trust formation, while system explainability features substantially impact trust sustainability (high-explainability M=4.76 vs. low-explainability M=3.28, p<0.001, d=1.78). Longitudinal analysis reveals non-linear trust trajectories with distinct investor classes showing increasing (58.2%), stable (23.7%), or degrading (18.1%) patterns over nine months. AI-advised portfolios outperformed self-directed investments by 7.2% on risk-adjusted returns (Sharpe ratio: 0.83 vs. 0.65, p<0.01) with significant reductions in overconfidence bias (41.3%) and disposition effect (37.8%). Financial literacy moderates these benefits, with high-literacy investors showing smaller performance differentials between AI-advised and self-directed conditions compared to low-literacy participants. Transparency regarding system limitations demonstrates particularly strong effects on trust calibration, with 76.4% of participants in transparent conditions exhibiting appropriate reliance patterns versus 34.2% in non-disclosure conditions. These findings advance understanding of human-AI interaction in financial contexts and provide implications for designing trustworthy advisory systems that enhance retail investor outcomes.

Keywords

AI financial advisors, trust dynamics, decision quality, explainable AI

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Cite this article

Trinh,T.K.;Jia,G.;Cheng,C.;Ni,C. (2025). Behavioral Responses to AI Financial Advisors: Trust Dynamics and Decision Quality Among Retail Investors. Applied and Computational Engineering,144,69-79.

Data availability

The datasets used and/or analyzed during the current study will be available from the authors upon reasonable request.

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About volume

Volume title: Proceedings of the 3rd International Conference on Functional Materials and Civil Engineering

Conference website: https://2025.conffmce.org/
ISBN:978-1-80590-021-4(Print) / 978-1-80590-022-1(Online)
Conference date: 24 October 2025
Editor:Anil Fernando
Series: Applied and Computational Engineering
Volume number: Vol.144
ISSN:2755-2721(Print) / 2755-273X(Online)

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