V2EX base-rate fallacy

Base-Rate Fallacy

释义 Definition

基率谬误 / 基本比率谬误:在判断某个事件或对象的概率时,忽视总体中的基础发生率(base rate),而过度依赖个案信息、直觉印象或某项测试结果,从而得出偏差结论。(也常见于对统计与条件概率的误解。)

发音 Pronunciation (IPA)

/bes ret flsi/

例句 Examples

Many people commit the base-rate fallacy when they ignore how rare the disease is.
很多人在忽视疾病本身有多罕见时,就会犯基率谬误。

Even with a highly accurate test, the base-rate fallacy can make a positive result seem more convincing than it really is in a low-prevalence population.
即使检测非常准确,在低患病率人群中,基率谬误也会让“阳性结果”看起来比实际更有说服力。

词源 Etymology

base rate 意为“基础比率/总体发生率”,来自统计与概率语境;fallacy 意为“谬误/谬论”,源自拉丁语 fallacia(欺骗、错误推理)。合起来指一种常见的推理错误:忽略总体比例,只盯着眼前信息。

相关词 Related Words

文学作品示例 Literary Works

在大众读物与学术写作中更常直接出现该术语(“base-rate fallacy / base rate neglect”)而非传统文学名著;以下为常被引用、讨论这一概念的著作:

  • Daniel Kahneman, Thinking, Fast and Slow(《思考,快与慢》)
  • Richard H. Thaler & Cass R. Sunstein, Nudge(《助推》)
  • Thomas Gilovich, How We Know What Isn’t So(《我们如何知道我们并非如此》)
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