How do cognitive biases affect ethical decision-making in medicine?

• A. They can distort risk assessment
• B. They can distort equity judgments
• C. They can distort interpretation of patient preferences
• D. All of the above

Answer: (D)

Cognitive biases shape ethical medical decisions by altering how clinicians weigh risks, assess fairness, and interpret what patients value. When judging risk, biases such as the availability heuristic, anchoring, and base-rate neglect can make certain outcomes seem more or less likely than they are, leading to choices that overemphasize harms or overstate benefits. This can push decisions away from balanced beneficence and nonmaleficence.

Biases also seep into judgments about equity. Implicit stereotypes or prejudices can influence who receives certain tests or treatments, affecting justice and fair access to care. Decisions may favor or exclude groups in subtle ways, not because of patient needs but because of biased impressions about those groups.

Interpreting patient preferences is another area biased by cognition. Clinicians may project their own values, misread expressions of choice, or be swayed by framing effects, thereby misaligning the plan with what the patient truly values or desires.

Since biases can distort risk assessment, equity judgments, and interpretation of patient preferences, they influence all these aspects of ethical decision-making. That’s why the best answer recognizes that cognitive biases can affect each of these areas. To counteract this, clinicians can use shared decision-making, bias-awareness training, and structured decision aids to ground choices in patient values and objective risk information.