Identical twins Jo and Jerri have identical preferences; both love to go to football games, and both are looking forward to their alma mater's homecoming. Jo bought her ticket in advance; Jerri plans to buy hers at the gate. On the day of the big game, a blizzard strikes. Explain, using the theories of behavioral economics, why Jerri is more likely to stay home than Jo. What bias is at work? Explain.