NO.PZ2022052301000010
问题如下：
One day after the Brexit referendum, Arzac met with Pak for the annual review of his portfolio and an assessment of his earlier decision to continually add global securities to his portfolio. In the meeting, Pak tells Arzac he and his friends discussed the possible impact of Brexit on their portfolios if the UK decided to leave the EU.
His friends subsequently got out of the market prior to the referendum. Pak, however, decided to stay in the market. The referendum results caused a sharp drop in security prices worldwide, causing Pak’s portfolio value to decline by 20%. He now wants to sell the biggest losers so he can realign his portfolio because he thinks the market will continue to decline given the current momentum. Pak adds, “I should have known the Brexit referendum would go the way it did.
Pak’s conversation with Arzac in the annual review meeting after the Brexit referendum most likely reflects which type of bias?
选项：
A.Herding
Hindsight
Loss aversion
解释：
In expressing the opinion that he should have known the Brexit referendum outcome in advance, Pak is exhibiting hindsight bias or regret. Humans have a tendency to see past events as having been predictable, and the resulting regret can be acute when the event results in a highly volatile market.
A is incorrect because Pak did not follow his friends when they exited the market prior to the Brexit referendum.
C is incorrect because Pak is selling his biggest losers so does not exhibit signs of loss aversion.
题干中最后提及了momentum，选momentum相关的herding不是更好吗？
