Cognitive Biases in Decision Making: Why Human Judgment Deviates from Rationality
Cognitive biases are systematic patterns of deviation from formal standards of reasoning that arise from the ordinary structure and limits of human cognition. In cognitive psychology, they are not treated as random mistakes or isolated lapses in judgment, but as predictable outcomes of the same mechanisms that make thought efficient under uncertainty. Attention filters what is noticed, memory reconstructs and prioritizes experience, working memory limits how much can be processed at once, and decision systems rely on heuristics to act without exhaustive computation. Because cognition must operate under pressure, ambiguity, and incomplete information, it often favors speed, tractability, and usable approximation over perfect accuracy. Biases therefore reveal something fundamental about how the mind works: they are not external to intelligence but emerge from the adaptive strategies that make intelligence possible in complex environments. This is why the study of cognitive bias became so influential across psychology, behavioral economics, neuroscience, and public policy. It shows that judgment is systematically shaped by the architecture of cognition itself, and that understanding those distortions is essential for understanding how people interpret information, evaluate risk, and make decisions in the real world.







