Social and Psychological Factors Influencing Financial Decision Making: Behavioral Biases, Social Influences, and Market Implications

Abstract

Financial decision making has traditionally been analyzed through rational actor models, yet substantial evidence demonstrates that social and psychological factors systematically shape choices at individual and market levels. Cognitive biases, emotional responses, and social influences often lead to deviations from expected utility maximization with significant consequences for wealth accumulation, market stability, and policy effectiveness. This review examines these dynamics, grounded in prospect theory, social influence frameworks, and behavioral finance perspectives. Recognition of psychological and social drivers has driven transformations from purely rational models to integrated behavioral frameworks, from isolated individual analysis to socially embedded decision processes, and from static preference assumptions to context-dependent and emotionally influenced models. Specific mechanisms—including mental accounting, herding behavior, overconfidence, and social proof—explain patterns in investment, borrowing, and consumption decisions. Applications in retail investing, corporate finance, and policy design demonstrate both diagnostic value and intervention opportunities. Challenges of measurement, generalizability across cultures, and the difficulty of debiasing persist. Prospects center on personalized interventions, improved financial architecture that accounts for behavioral tendencies, and integration of social network analysis into market monitoring. The analysis concludes that incorporating social and psychological factors provides a more accurate and actionable understanding of financial behavior, enabling better-designed products, policies, and market structures.