TY  - JOUR
T1  - Are Large Language Models Rational or Behavioral? A Comparative Analysis of Investor Behavior Interpretation
TT  - Büyük Dil Modelleri Rasyonel mi, Davranışsal mı? Yatırımcı Davranışlarına Dair Karşılaştırmalı Bir Analiz
AU  - Şahin, Özkan
PY  - 2025
DA  - October
Y2  - 2025
DO  - 10.29130/dubited.1711955
JF  - Duzce University Journal of Science and Technology
JO  - DÜBİTED
PB  - Düzce Üniversitesi
WT  - DergiPark
SN  - 2148-2446
SP  - 1556
EP  - 1582
VL  - 13
IS  - 4
LA  - en
AB  - This study aims to evaluate the ability of Large Language Model (LLM)-based AI applications to understand and interpret the fundamental theories of behavioral finance. In this context, the responses of five current LLM applications (ChatGPT 4o, Deepseek, Gemini 2.0 Flash, QwenChat 2.5 Max, and Copilot) were comparatively analyzed based on ten distinct scenarios involving behavioral biases and investment decision-making. The findings reveal how each model responds to behavioral concepts such as conceptual depth, psychological insight, strategic recommendation level, and originality. The results indicate that while the applications demonstrate successful analyses in certain cases, they also differ significantly in terms of data source diversity, contextual sensitivity, and algorithmic approaches. In particular, notable discrepancies were observed in explainability, consistency, and theory-based interpretive capacity. Ultimately, the study concludes that LLM systems have the potential to assess investment decisions not only through a rational framework but also from a behavioral perspective. Accordingly, the research provides both theoretical and practical contributions to the development of AI-based financial decision support systems.
KW  - Behavioral Finance
KW  - Large Language Models (LLMs)
KW  - Financial Decision-Making
KW  - Generative Artificial Intelligence
N2  - Bu çalışmada, farklı büyük dil modeli (Large Language Model-LLM) tabanlı yapay zekâ uygulamalarının davranışsal finans teorilerini anlama ve yatırımcı psikolojisi senaryolarını yorumlama kapasiteleri analiz edilmiştir. Analize dahil edilen beş uygulama (ChatGPT 4o, Deepseek, Gemini 2.0 Flash, QwenChat 2.5 Max, ve Copilot), 10 özgün senaryo üzerinden değerlendirilmiştir. Araştırma ile, LLM’lerin finansal karar alma süreçlerini anlamlandırmada rasyonel yatırımcı modelinin ötesine geçip geçemediğini ve davranışsal finans ilkelerine yönelik içgörüler sağlayıp sağlayamadığını ortaya koymak hedeflenmiştir. Sonuçlar, uygulamaların belirli durumlarda başarılı analizler sunduğunu, ancak veri kaynaklarının çeşitliliği, bağlamsal duyarlılık ve algoritmik yaklaşımlar açısından önemli farklılıklar gösterdiğini ortaya koymuştur. Ayrıca, yapay zekâların yatırımcı davranışlarına yönelik yorumlamalarında tutarlılık ve açıklanabilirlik açısından bazı sınırlamalar gözlemlenmiştir. Sonuç olarak, LLM tabanlı sistemlerin davranışsal finans yaklaşımlarını daha etkili bir şekilde benimseyebilmeleri için geliştirme süreçlerinde etik ilkeler, uzman katkısı ve veri kalitesine daha fazla odaklanılması gerekmektedir.
CR  - Ariely, D., & Berns, G. S. (2010). Neuromarketing: the hope and hype of neuroimaging in business. Nature Reviews Neuroscience, 11(4), 284-292. https://doi.org/10.1038/nrn2795
CR  - Barberis, N., & Thaler, R. (2003). A survey of behavioral finance. In G. M. Constantinides, M. Harris, & R. M. Stulz (Eds.), Handbook of the Economics of Finance, Volume 1A Corporate Finance, , (1st ed., pp. 1053–1128.) Elsevier. https://doi.org/10.1016/S1574-0102(03)01027-6
CR  - Bender, E. M., Gebru, T., McMillan-Major, A., & Shmitchell, S. (2021, March). On the dangers of stochastic parrots: Can language models be too big? In Proceedings of the 2021 ACM Conference on Fairness, Accountability, and Transparency (pp. 610-623). https://doi.org/10.1145/3442188.3445922
CR  - Bommasani, R., Hudson, D. A., Adeli, E., Altman, R., Arora, S., Arx, S., Bernstein, M. S., Bohg, J., Bosselut, A., Brunskill, E., Brynjolfsson, E., Buch, S., Card, D., Castellon, R., Chatterji, N., Chen, A., Creel, K., Davis, J. Q., Demszky, D., … Liang, P. (2021). On the opportunities and risks of foundation models. arXiv preprint. https://doi.org/10.48550/arXiv.2108.07258
CR  - Brown, T. B., Mann, B., Ryder, N., Subbiah, M., Kaplan, J., Dhariwal, P., Neelakantan, A., Shyam, P., Sastry, G., Askell, A., Agarwal, S., Herbert-Voss, A., Krueger, G., Henighan, T., Child, R., Ramesh, A., Ziegler, D. M., Wu, J., Winter, C., … Amodei, D. (2020). Language models are few-shot learners. Advances in neural information processing systems, 33, 1877-1901. https://doi.org/10.48550/arXiv.2005.14165
CR  - Bubeck, S., Chandrasekaran, V., Eldan, R., Gehrke, J., Horvitz, E., Kamar, E., Lee, P., Lee, Y. T., Li, Y., Lundberg, S., Nori, H., Palangi, H., Ribeiro, M. T. & Zhang, Y. (2023). Sparks of artificial general intelligence: Early experiments with GPT-4. arXiv preprint. https://doi.org/10.48550/arXiv.2303.12712
CR  - Chen, M., Tworek, J., Jun, H., Yuan, Q., Pinto, H. P. O., Kaplan, J., Edwards, H., Burda, Y., Joseph, N., Brockman, G., Ray, A., Puri, R., Krueger, G., Petrov, M., Khlaaf, H., Sastry, G., Mishkin, P., Chan, B., Gray, S., Ryder, … Zaremba, W. (2021). Evaluating large language models trained on code. arXiv preprint. https://doi.org/10.48550/arXiv.2107.03374
CR  - Chomsky, N. (1959). Syntactic structures. Mouton & Co.
CR  - Devlin, J., Chang, M. W., Lee, K., & Toutanova, K. (2019, June). Bert: Pre-training of deep bidirectional transformers for language understanding. In Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, (Vol. 1, Long and Short Papers) (pp. 4171–4186). Association for Computational Linguistics. https://doi.org/10.48550/arXiv.1810.04805
CR  - Floridi, L., & Cowls, J. (2022). A unified framework of five principles for AI in society. In R. Stouffs, S. Roudavski, & B. Davis (Eds.), Machine Learning and the City: Applications in Architecture and Urban Design (pp. 149–164). Springer. https://doi.org/10.1002/9781119815075.ch45
CR  - Howard, J., & Ruder, S. (2018). Universal language model fine-tuning for text classification. In Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) (pp. 328–339). Association for Computational Linguistics. https://doi.org/10.18653/v1/P18-1031
CR  - Jurafsky, D., & Martin, J. H. (2009). Speech and Language Processing (2nd ed.). Prentice Hall.
Kahneman, D., & Tversky, A. (1979). Prospect theory: An analysis of decision under risk. Econometrica, 47(2), 263–291. https://doi.org/10.2307/1914185
CR  - Kaplan, J., McCandlish, S., Henighan, T., Brown, T. B., Chess, B., Child, R., Gray, S., Radford, A., Wu, J. & Amodei, D. (2020). Scaling laws for neural language models. arXiv preprint. https://doi.org/10.48550/arXiv.2001.08361
CR  - Kwiatkowski, T., Palomaki, J., Redfield, O., Collins, M., Parikh, A., Alberti, C., Epstein, D., Polosukhin, I., Devlin, J., Lee, K., Toutanova, K., Jones, L., Kelcey, M., Chang, M. W., Dai, A. M., Uszkoreit, J., Le, Q. & Petrov, S. (2019). Natural questions: A benchmark for question answering research. Transactions of the Association for Computational Linguistics, 7, 453-466. https://doi.org/10.1162/tacl_a_00276
CR  - Lipton, Z. C. (2018). The mythos of model interpretability: In machine learning, the concept of interpretability is both important and slippery. Queue, 16(3), 31-57. https://doi.org/10.1145/3233231
CR  - Liu, Y., Gu, J., Goyal, N., Li, X., Edunov, S., Ghazvininejad, M., Lewis, M. & Zettlemoyer, L. (2020). Multilingual denoising pre-training for neural machine translation. Transactions of the Association for Computational Linguistics, 8, 726-742. https://doi.org/10.48550/arXiv.2001.08210
CR  - Loewenstein, G. F., Weber, E. U., Hsee, C. K., & Welch, N. (2001). Risk as feelings. Psychological Bulletin, 127(2), 267-286. https://doi.org/10.1037/0033-2909.127.2.267
CR  - Maynez, J., Narayan, S., Bohnet, B., & McDonald, R. (2020). On faithfulness and factuality in abstractive summarization. arXiv preprint. https://doi.org/10.48550/arXiv.2005.00661
CR  - Radford, A., Narasimhan, K., Salimans, T., & Sutskever, I. (2018). Improving language understanding by generative pre-training [Technical report]. OpenAI. https://cdn.openai.com/research-covers/language-unsupervised/language_understanding_paper.pdf
CR  - Shefrin, H., & Statman, M. (1985). The disposition to sell winners too early and ride losers too long: Theory and evidence. The Journal of Finance, 40(3), 777-790. https://doi.org/10.2307/2327802
CR  - Strubell, E., Ganesh, A., & McCallum, A. (2020, April). Energy and policy considerations for modern deep learning research. Proceedings of the AAAI Conference on Artificial Intelligence, 34(9), 13693-13696. https://doi.org/10.48550/arXiv.1906.02243
CR  - Vaswani, A., Shazeer, N., Parmar, N., Uszkoreit, J., Jones, L., Gomez, A. N., Kaiser, L. & Polosukhin, I. (2017). Attention is all you need. Advances in Neural Information Processing Systems, 30, 5998–6008. https://doi.org/10.48550/arXiv.1706.03762
CR  - Zhou, Y., Ni, Y., Gan, Y., Yin, Z., Liu, X., Zhang, J., Liu, S., Qiu, X., Ye, G. & Chai, H. (2024). Are LLMS rational investors? A study on detecting and reducing the financial bias in LLMs. arXiv preprint. https://doi.org/10.48550/arXiv.2402.12713
UR  - https://doi.org/10.29130/dubited.1711955
L1  - https://dergipark.org.tr/tr/download/article-file/4926763
ER  -