摘要：In early October, Joe, a second-year medical student, approached the dean of students. Midterms were about to begin, and Joe complained that he could not study properly in his room or even sleep because his roommate, Bob, also a second-year student, was up all night at his computer playing an online video game. Joe was concerned that Bob had become too involved in the game. The two had roomed together during their first year, when Bob had gone to class, studied, and slept regularly. Joe now hardly recognized his roommate who appeared tired, distant, and uncommunicative.
