代表性捷思法（Representativeness Heuristic）是一种常见的捷思法。

阿摩司·特沃斯基和丹尼尔·卡内曼把代表性捷思法定义为「判断事情基于(i)与母体特征相似程度和(ii)和反映过程的显著特征」。

the degree to which [an event] (i) is similar in essential characteristics to its parent population, and (ii) reflects the salient features of the process by which it is generated

The representativeness heuristic is used when making judgments about the probability of an event under uncertainty. It is one of a group of heuristics (simple rules governing judgment or decision-making) proposed by psychologists Amos Tversky and Daniel Kahneman in the early 1970s. Heuristics are described as "judgmental shortcuts that generally get us where we need to go – and quickly – but at the cost of occasionally sending us off course." Heuristics are useful because they use effort-reduction and simplification in decision-making.