18) Wilbur Rickhiser, a financial advisor, recently told one of his clients: “The biggest mistake
you can make is to hold onto a stock for too long in order to avoid a loss. Let’s say you bought a
stock for $50 per share but that six months later the price fell to $40 after a poor earnings report.
Many of my clients in this situation will hold the stock, hoping the price will later rise above
$50. In most cases like this the price does not rise and may even fall. You must know when to
cut your losses.” Which of the following is the best explanation for Rickhiser’s advice?
A) People sometimes buy stocks because other people are buying them or they want to appear to
be fashionable.
B) People sometimes make mistakes when they buy stocks because of the endowment effect.
C) People sometimes make mistakes when they buy stocks or when they buy goods and services:
they ignore the monetary opportunity costs of their choices.
D) People often fail to ignore the sunk costs of their decisions. The cost of the stock bought at
$50 per share is a sunk cost.
19) Suppose Adam Einberg pays $100 for a ticket to a new Broadway play and $100 was the
maximum price he was willing to pay. On the day of the performance of the play Adam refuses
to sell the ticket for $150. How would behavioral economists explain Adam’s refusal to sell his
ticket?
A) Adam’s tastes had changed from the time he bought the ticket to the time of the performance
of the play.
B) When Adam bought the ticket he was being unrealistic about his future behavior.
C) The endowment effect explains Adam’s actions. People like Adam seem to value things that
they have more than the things they do not have.
D) Adam’s income probably increased between the time he bought the ticket and the day of the
play’s performance.