True or false
a. Analysis by security analysts and investors helps keep markets efficient.
b. Psychologists have found that, once people have suffered a loss, they are more relaxed about the possibility of incurring further losses.
c. Psychologists have observed that people tend to put too much weight on recent events when forecasting.
d. If the efficient-market hypothesis is correct, managers will not be able to increase stock prices by creative accounting that boosts reported earnings.