Internet use appears to cause a decline in psychological well-being, according to research at Carnegie Mellon University. Even people who【B1】just a few hours a week on the Internet【B2】more depression and loneliness than those who logged on less【B3】, the two-year study showed. And it wasn't that people who were already feeling【B4】spent more time on the Internet, but the using the Net actually【B5】to cause the bad feelings. Researchers are puzzling over the results,【B6】were completely contrary to their【B7】. They expected that the Net would prove socially【B8】than television, since the Net【B9】users to choose their information and to【B10】with others. The fact that Internet use has【B11】time available for family and friends may【B12】for the drop in well-being,【B13】hypothesized(假设). Faceless, bodiless virtual communication may be less psychologically satisfying than actual【B14】, and the relationships formed through it may be【B15】. Another possibility is that exposure【B16】the wider world via the Net makes users【B17】satisfied with their lives. 'But it's important to remember this is not about the technology itself it's about【B18】it is used,' says psychologist Christine Riley of Intel, one of the study's sponsors. It really points to the need for considering social【B19】in terms of how you design applications and services【B20】technology. 【B1】