Psychological Determinants of Investment Decisions: An Integrated Sierpinski Triangle Fuzzy-based Decision-Making Model for Enhancing Financial Well-Being. J. Expert Syst. Sustain. Dev. [Internet]. 2026 Aug. 26 [cited 2026 Aug. 29];2(1):169-90. Available from: https://essd-journal.org/index.php/essd/article/view/20