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For decades, traditional economics assumed that human beings make rational decisions based on careful analysis of costs and benefits.

幾十年來，傳統經濟學一直假設人類會基於對成本和收益的仔細分析做出理性決策。

This model, known as rational choice theory, suggests that individuals consistently act in their own best interest.

這一被稱為理性選擇理論的模型表明，個人始終會按照自身的最佳利益行事。

However, behavioral economics challenges this assumption by demonstrating that emotions,

然而，行為經濟學通過證明情緒會影響決策，對這一假設提出了挑戰。

cognitive biases, and psychological factors significantly influence decision-making,

often leading to seemingly irrational choices.

One of the most influential concepts in behavioral economics is loss aversion.

Research has shown

that the pain of losing a certain amount of money is

approximately twice as strong as the pleasure of gaining the same amount.

This explains why many investors hold on to losing stocks for too long,

hoping to avoid the regret of realizing a loss even when selling would be the more logical choice.

Similarly, the sunk cost fallacy describes the tendency to continue investing time,

money, or effort into a failing endeavor simply because resources have already been committed.

These insights have practical applications beyond individual behavior.

Governments and organizations now use nudging, small changes in how choices are presented to encourage better outcomes.

For example, making pension enrollment automatic has significantly increased participation rates in many countries.

Likewise, placing healthier food options at eye level in cafeterias subtly promotes better eating habits without restricting freedom of choice.

These strategies demonstrate how understanding human psychology can lead to more effective public policies.

Critics argue that behavioral economics oversimplifies human behavior and underestimates the role of social and cultural factors.

Others worry that nudging could be used to manipulate individuals rather than empower them.

Nevertheless, the field offers a valuable framework for understanding decision-making.

By recognizing patterns such as loss aversion and the sunk cost fallacy, individuals can make more informed choices,

while policymakers can create environments that gently steer citizens toward better decisions without coercion.

For decades, traditional economics assumed that human beings make rational decisions based on careful analysis of costs and benefits.

This model, known as Rational Choice Theory, suggests that individuals consistently act in their own best interest.

This model, known as Rational Choice Theory,

suggests that individuals consistently act in their own best interest.