星同學(xué)
2020-08-19 22:51老師您好,做完題后對于representativeness更蒙了,感覺題里面在這個bias強(qiáng)調(diào)的點都是overweight new information,也就是只根據(jù)新信息傳達(dá)的意思來判斷未來操作,如果只是單純的說【因為過去業(yè)績好,所以未來業(yè)績也會好】這種情況算是代表性偏差嗎?
所屬:CFA Level III 視頻位置 相關(guān)試題
來源: 視頻位置 相關(guān)試題
1個回答
Chris Lan助教
2020-08-20 09:05
該回答已被題主采納
同學(xué)你好
代表性偏誤是根據(jù)過去的經(jīng)驗對新的信息進(jìn)行簡單的歸類。
過去業(yè)績好是過去的經(jīng)驗,未來業(yè)績好是基于過去經(jīng)驗的歸類。所以這個舉例應(yīng)該沒有什么問題。
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追答
Representativeness bias is a belief perseverance bias in which people tend to classify new information based on past experiences and classifications. They believe their classifications are appropriate and place undue weight on them. This bias occurs because people attempting to derive meaning from their experiences tend to classify objects and thoughts into personalized categories. When confronted with new information, they use those categories even if the new information does not necessarily fit. They rely on a “best fit” approximation to determine which category should provide a frame of reference from which to understand the new information.
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追問
老師好,那我就還是不太理解,像casebook里面的題給的情景是【過去業(yè)績好,現(xiàn)在出了利空新消息,然后投資者就選擇sell了】,如果是依據(jù)過去經(jīng)驗,應(yīng)該還是會覺得好昂?
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追答
同學(xué)你好
能說一下是哪個題嗎,如果沒按過去的經(jīng)驗去歸類不能算代表性偏誤。 -
追問
casebook 2018-B
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追答
同學(xué)你好
根據(jù)原版書的說法,Representativeness 確實是存在overweighted new information的情況。
當(dāng)新的信息和過去的信息是不同的時候,可能就會overweighted new information
這個題就是新信息和過去的信息不同。
