The Representativeness Heuristic: Judging Likelihood on Similarity

The representativeness heuristic is one of the most influential concepts in cognitive psychology, profoundly shaping the way individuals make judgments and decisions. First introduced by psychologists Amos Tversky and Daniel Kahneman, this heuristic explains how people often assess probabilities and likelihoods based on how closely an event or object resembles a prototype or existing mental model. While this cognitive shortcut can be useful in navigating a complex world, it also introduces biases that distort reasoning and lead to systematic errors.

At its core, the representativeness heuristic simplifies decision-making by allowing individuals to rely on surface-level similarities rather than delving into deeper, more complex analyses. For example, if someone observes a well-dressed, articulate individual discussing financial markets, they might assume the person is a financial expert, even without any concrete evidence. This judgment stems from the resemblance of the observed traits to the prototype of a financial expert. However, such assumptions often overlook critical information, such as actual expertise or experience.

The origins of the heuristic lie in the evolutionary need for humans to make rapid decisions in uncertain environments. In situations where time and resources are limited, relying on similarity and pattern recognition can provide a survival advantage. While these mechanisms were effective in ancestral contexts, their application to modern, complex scenarios often leads to cognitive pitfalls. In many cases, the representativeness heuristic prompts individuals to ignore statistical data, base rates, and other relevant information in favor of intuitive judgments.

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Buku audio : 30 Januari 2025