Which of the following statements best describes overconfidence?[Fill in the blank]

Question

BlackTom AI · Accepted Answer

Overconfidence is a cognitive bias in which people overestimate the precision of their information, the accuracy of their beliefs, or their ability to control events.

1) Relevant concepts and empirical findings
- Overconfidence appears in both individual and professional decision-makers: retail investors, institutional fund managers, corporate executives (CEOs). 
- Empirical finance studies (e.g., Barber & Odean, 2001) find male retail investors trade more than female investors, driven by overconfidence — so overconfidence is often stronger among men, not women. 
- Corporate finance work (e.g., Malmendier & Tate, 2005) documents CEO overconfidence affecting corporate investment and M&A decisions, showing managers can be overconfident. 
- Institutional investors can also exhibit overconfidence (excess trading, concentrated bets), though incentives and monitoring sometimes moderate the behavior relative to naïve individuals.

2) Step‑by‑step reasoning
- Evaluate option a: claims overconfidence is more severe among female managers. Empirical evidence points the opposite (men tend to show greater overconfidence); thus a is incorrect.
- Evaluate option b: claims female investors trade more due to overconfidence. Data show male investors trade more and are typically more overconfident, so b is incorrect.
- Evaluate option c: claims investors are subject while corporate managers are not. Research shows corporate managers (CEOs) can be overconfident and that this affects firm decisions; so c is incorrect.
- Evaluate option d: claims individual investors are subject while institutional investors are not. Institutional investors can be overconfident as well (though incentives/oversight differ), so d is incorrect.

3) Calculations
- None required for this conceptual question.

4) Why the correct answer is correct
Because each specific statement (a–d) misstates empirical or theoretical findings about who exhibits overconfidence. The literature indicates overconfidence is not limited to one gender, to retail investors only, or to individuals only — it can afflict managers and institutions as well, and empirical gender patterns point toward greater overconfidence among men, not women.

5) Why other options are incorrect (brief)
- a: contradicts empirical evidence about gender and overconfidence among managers.
- b: contradicts empirical evidence about gender and trading frequency.
- c: false because corporate managers (CEOs) have been shown to be overconfident.
- d: false because institutional investors can also display overconfidence.

Conclusion: Therefore, the best choice is e. None of the options provided. This matches the given correct answer.

Which of the following statements best describes overconfidence?[Fill in the blank]单项选择题

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