According to behavioral economists, precommitments:
A. help people overcome their self-control problems caused by time inconsistency.
B. do not fundamentally alter decisions because they do not change the benefits or costs of a
particular action.
C. end up being more costly as people regularly violate them and incur penalties.
D. overcome cognitive biases introduced by brain System 2.
Answer: A
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The economic profit of a perfectly competitive firm
A) is less than its total revenue. B) equals its total revenue. C) is greater than its total revenue. D) is less than its total revenue if its supply curve is inelastic and is greater than its total revenue if its supply curve is elastic.
Brokers, in contrast to security dealers
A) hold inventories of securities. B) make their income through commissions. C) make their living on the spread between the bid price and the asked price. D) buy and sell securities at given prices.
A takeover of one firm by another
A. ties up the nation’s capital wastefully. B. uses up the economy’s credit supply. C. reduces the value of the acquired firm. D. changes the ownership of the acquired firm.
Consider two resource markets in which the demand curves slope downward. In market A, the supply curve is horizontal, equilibrium price is $6, and 100 units of the resource are hired. In market B, the supply curve is vertical, equilibrium price is $20, and 30 units of the resource are hired. Which of the following is true?
a. All of the resource earnings in market A are opportunity costs. b. All of the resource earnings in both markets are opportunity costs. c. All of the resource earnings in market B are opportunity costs. d. None of the resource earnings in either market is an opportunity cost. e. None of the resource earnings in either market is economic rent.