Cognitive Biases in Clinical Decision-Making: Implications for Psychological Practice

Background/Objectives: Clinical psychologists are routinely required to make complex decisions under uncertainty, often with incomplete information and within emotionally and institutionally charged contexts. A substantial body of evidence from cognitive psychology demonstrates that these decisions are vulnerable to systematic distortions known as cognitive biases. Methods: Theoretical and empirical literature was reviewed to identify key distortions, including confirmation bias, availability heuristic, anchoring, overconfidence and the illusion of validity. Special attention is given to the cumulative dynamics of bias cascade and snowball effects, as well as the influence of contextual variables such as workload, cultural mismatch and documentation practices. Results: Different reasoning frameworks—rational-analytic, intuitive-humanistic and hypothetico-deductive—exhibit varying vulnerability to bias. Ethical and epistemological risks include compromised patient autonomy, unjust credibility judgments and institutional blind spots. Conclusions: Evidence-based mitigation strategies are highlighted, such as structured decision protocols, metacognitive awareness training, collaborative frameworks and outcome-driven feedback.