1.A study examining market reactions to earnings surprises found that prices tend to drift after earnings surprises. What does this tell you about the market's capacity to learn from events and new information? What cross-sectional differences would you expect to nd in this learning behaviour? (Would you expect to see a greater price drift in some types of rms than in others? Why?) How would you try to exploit this anomaly? What possible costs would you have to keep in mind?