Availability Heuristic, Risk Tolerance, and Investment Decision-Making: A Behavioral Perspective

This paper examines the mechanisms through which cognitive biases shape investment decisions in emerging markets, situated within the framework of behavioral finance. Combining case analysis and empirical evidence, it explores how heuristics such as availability bias, overconfidence, and anchoring influence investment behavior via the mediating role of risk tolerance. Key findings include: (1) investors dynamically adjust risk tolerance based on readily accessible information (e.g., vaccine news, airline crisis reports), leading to irrational portfolio adjustments; (2) media overexposure to rare but sensational events (e.g., terrorist attacks, plane crashes) significantly distorts risk perception beyond statistical probabilities; (3) gender disparities emerge, with women showing higher sensitivity to availability heuristics in insurance decisions and men demonstrating greater risk tolerance; and (4) risk tolerance acts as a critical intermediary, highlighting the interplay between emotional and cognitive factors in financial decision-making. The study innovates by extending behavioral finance theories to non-Western contexts and systematically demonstrating the reinforcing effects of cultural and institutional factors on bias transmission. Policy recommendations include establishing multi-dimensional financial literacy education systems, developing gender-differentiated investment advisory services, constructing regulatory frameworks for media risk communication, and designing dynamic risk tolerance assessment tools. This research provides theoretical foundations and practical pathways for optimizing investor behavior and regulatory policies in emerging markets.