A Comprehensive Analysis of Behavioral Finance and its Impact on Investment Decisions

Abstract

This paper thoroughly examines behavioral finance, challenging traditional financial theories by questioning investor rationality and market efficiency. Focusing on five key phenomena—loss aversion, short-term momentum, long-term reversal, framing effect, and endowment effect—the analysis relies on real-world observations to reveal how psychological biases significantly impact investor decisions and financial markets. Loss aversion, especially evident during financial crises, highlights humans' tendency to avoid potential losses rather than pursuing equivalent gains. The study explores short-term momentum and long-term reversal, challenging market efficiency theories by illustrating how past performance influences future returns. Emphasizing cognitive biases like framing and endowment effects, the paper underscores their role in diverse investment decisions and irrational asset overvaluation based on a sense of ownership. It advocates for incorporating these biases in financial models, regulations, and investment strategies, emphasizing their importance for stakeholders to navigate the financial landscape, minimize instability, and capitalize on opportunities. The research establishes a foundation for a holistic finance approach, respecting and leveraging human behavior for market stability and benefit.