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Yuyu · 2021年09月14日

这道题不同的助教给的解答不一样 

* 问题详情,请 查看题干

NO.PZ201511190100000406

问题如下:

Patel’s comment in his risk tolerance questionnaire regarding the Private Wealth Investment Committee fails to recognize which bias?

选项:

A.

Social proof.

B.

Confirmation bias.

C.

Gambler’s fallacy.

解释:

A is correct.

Social proof is a belief in which individuals are biased to follow the beliefs of a group. The structure of Garnier’s Private Wealth Investment Committee indicates that they may be susceptible to a social proof bias. The committee meets to discuss and debate each security and then votes on which will be approved. Committee members may wrongly favor the judgment of others, often without being fully aware that they are doing so. The process of reaching a consensus will usually narrow the range of views. If a group decision process does not encourage private information held by individual committee members to be shared fully with others before a decision is made, the decision may fail to combine the collective wisdom of the group. There is no evidence that this committee encourages private information.

备注:这道题出的不太好,原版书给的答案A。Patel“一旦知道investment committee支持了某项投资,他的风险容忍程度会显著提高”,这句话既反映的是confirmation bias。social proof和herding是同义词,羊群效应,是一种从众的行为。Gambler's fallacy是赌徒谬误,比如连续五次抛出硬币的正面,认为第六次抛出硬币反面的概率非常高,但事实上,抛出反面的概率仍为50%,Patel没有这样的表现。不用纠结选项。

请问题干问的是投资者自身的偏差,还是投委会的偏差?
1 个答案

Olive_品职助教 · 2021年09月17日

嗨,努力学习的PZer你好:


上面截图是social proof的定义,从定义来看是说individual的bias,但是这个bias通常影响的是整个team的决策。

从这道题而言,我认为是题目没有说清楚要考谁的bias,题干的表述模棱两可,没有说清问的是谁的bias,从题目的答案来看又用的“they”这样的表述,似乎在说委员会的偏差,所以个人认为同学不需要特别纠结这道题,只要通过题目知道它考查的知识点即可。

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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NO.PZ201511190100000406问题如下 Patel’s comment in his risk toleranquestionnaire regarng the Private Wealth Investment Committee fails to recognize whibias?A.Sociproof.B.Confirmation bias.C.Gambler’s fallacy.A is correct.Sociproof is a belief in whiinvials are biaseto follow the beliefs of a group. The structure of Garnier’s Private Wealth Investment Committee incates ththey msusceptible to a sociproof bias. The committee meets to scuss anbate easecurity anthen votes on whiwill approve Committee members mwrongly favor the jument of others, often without being fully aware ththey are ing so. The process of reaching a consensus will usually narrow the range of views. If a group cision process es not encourage private information helinvicommittee members to sharefully with others before a cision is ma, the cision mfail to combine the collective wism of the group. There is no evinththis committee encourages private information.备注这道题出的不太好,原版书给的答案A。Patel“一旦知道investment committee支持了某项投资,他的风险容忍程度会显著提高”,这句话既反映的是confirmation bias。sociproof和herng是同义词,羊群效应,是一种从众的行为。Gambler's fallacy是赌徒谬误,比如连续五次抛出硬币的正面,认为第六次抛出硬币反面的概率非常高,但事实上,抛出反面的概率仍为50%,Patel没有这样的表现。不用纠结。解析是想说confirmation和sociproof和herng是同一个意思,还是后两者是同一个意思但和第一个无关?

2023-06-07 08:58 1 · 回答

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2023-05-01 14:29 2 · 回答

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2022-11-29 15:27 1 · 回答

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2021-10-02 11:45 1 · 回答