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unique · 2023年01月20日

这道题对于representativeness bias可以这样理解吗？

  1. CFA III
  2. Behavioral Finance

NO.PZ2018091702000012

问题如下：

Linda is a portfolio manager with excellent record of performance. She owes the success to her hard working and sound knowledge of capital market. However, recently her portfolio did not perform well and some investors have withdrawn their investments. In her meeting with her boss Jesse, she said, ‘The underperformance should not blame on me. It is the traders who did not execute my order soon enough to catch up with the market changes.'

Linda least likely has the behavior bias of:

选项：

A.

Illusion of knowledge.

B.

Representativeness.

C.

Self-attribution.

解释：

B is correct.

考点：识别behavior bias

解析：Representativeness bias 指的是人们在处理新信息时会套用模板，也就是凭过去的经验将信息分类，Linda没有这样的行为。

过去信息A：Linda过去业绩很好，她把成功归因于自己的努力和对资本市场的了解


新信息B：Linda最近业绩不好，投资人要求赎回


若有representativeness bias，Linda应该反思自己，资本市场可能已经发生变化而自己并不了解


而实际上Linda反应：把责任推卸到trader，仍认为自己很了解资本市场且很努力


因此，这里没有representativeness bias

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2 个答案

王琛_品职助教 · 2023年01月21日

嗨，爱思考的PZer你好：


谢谢老师，你的回答非常全面且详细～ 因为我刚刚学习到representativeness bias这个概念，对于A和C还不了解，所以想试着用刚学的概念来分析，后面我再做经典题的时候会再看看老师的讲解哈～

给同学活学活用、举一反三的好习惯手动点赞哈~

关于代表性和保守性偏差，咱们在基础班、强化班、经典题都做了对比，老师也把出题套路说透了，相信同学届时做经典题时会秒懂哈，加油！

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就算太阳没有迎着我们而来，我们正在朝着它而去，加油！

王琛_品职助教 · 2023年01月20日

嗨，爱思考的PZer你好：


1

其实同学分析的框架是对的，就是 representativeness bias 更注重新信息，也请参考：https://class.pzacademy.com/qa/87525

只不过从出题套路来看，一般题干背景都是关于一家公司，信息也都是和公司的经营业绩等相关

而这道题，其实选项 A 和 C 很明显，所以 B 是干扰项，直接可以排除

2

关于 representativeness bias

历年真题中，有两道题考查过： [2018-4-B](1.4) , [2017-5-A](1.2)

格式说明： [真题](经典题) 。例： [2018-4-B](1.4) ，即真题 2018 年第 4 题的 B 问，经典题 R1 的 1.4 题

建议同学先把这两道题做一下，解题思路可以听一下经典题老师的讲解，感觉一下协会对 representativeness 的考查，尤其是题干背景对信息的介绍

如果备考时间紧张，只听其中一道的讲解即可，另外一道的考法是一样的，只是换了案例背景

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虽然现在很辛苦，但努力过的感觉真的很好，加油！

unique · 2023年01月20日

谢谢老师，你的回答非常全面且详细～ 因为我刚刚学习到representativeness bias这个概念，对于A和C还不了解，所以想试着用刚学的概念来分析，后面我再做经典题的时候会再看看老师的讲解哈～

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