The scientists had seen this situation at work during an earlier study of video games and cognition. Past research had suggested that playing action-oriented video games improves players’ subsequent thinking skills. But when scientists in the new study asked video-game players to estimate by how much the games would improve their thinking, the players’ estimates almost exactly matched the gains seen on cognitive tests after playing. In other words, the cognitive benefits of playing video games appear to be largely a result of a placebo effect.
在早前对视频游戏与认知能力的关系所做的研究中,科学家们就遇到过这种情况。过去的研究显示,玩动作类视频游戏可以改善玩家的思维能力。但当进行新研究的科学家们让视频游戏玩家估计游戏能在多大程度上改善他们的思维能力时,玩家的估计几乎和玩后的认知测试的加分完全吻合。换句话说,玩视频游戏的认知好处似乎主要是心理作用。
For the new study, which was published last month in PLOS One, the researchers repeated this experiment but focused on exercise. Recruiting 171 people through an online survey system, they asked half of these volunteers to estimate by how much a stretching and toning program performed three times a week might improve various measures of thinking, including memory and mental multitasking.
关于锻炼的这项新研究上个月发表在《公共科学图书馆:综合》期刊(PLOS One)上。研究人员重复了这个实验,但把实验内容换成了体育锻炼。他们通过一个在线调查系统招募了171人,要求其中一半的志愿者来评估,如果一周进行三次拉伸运动,能够在多大程度上改善思维能力,比如记忆力和一心多用的能力。
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