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  3. Phone data could predict with 87% accuracy whether someone had depressive symptoms. "We found that the more time people spend on

Phone data could predict with 87% accuracy whether someone had depressive symptoms. "We found that the more time people spend on

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问题     Phone data could predict with 87% accuracy whether someone had depressive symptoms. "We found that the more time people spend on their phones, the more likely they are to be more depressed," says David Mohr, one of the authors of the study and director of the Center for Behavioral Intervention Technologies at Northwestern University Feinberg School of Medicine. Northwestern researchers recruited 28 people ages 19 -58 from Craigslist and souped up their smartphones with location-and-usage monitoring software. At the start of the study, they took a standardized questionnaire that measures depressive symptoms; half of the subjects had symptoms of depression, and half did not. For two weeks, the phones tracked GPS location information every five minutes and pinged the users with questions about their mood several times a day. The phone data the researchers collected were rich; how many places the participants visited each day, how much time they spent in each of those places and how frequently they used their phones. The researchers then correlated this objective data with their depression test scores.
    What they hoped to find was a connection between the objective markers of behavior—such as where the people were and how often they changed locations—and their depression test results. Mohr and his team indeed found a strong correlation between these objective markers and depression. Phone data were even better than the daily questions the users answered to predict depression test results. "People who tend to spend more time in just one or two places—like people who stay at home or go to work and go back home—are more likely to have higher depression scores," says Mohr. When a person moved around was important, too; people who stuck to a regular pattern of movement tended to be less depressed, they found. " This fits into a larger body of clinical research showing that people with mental health problems in general, their circadian rhythms get thrown off," Mohr says. "Usually it’s looked at with sleep and activity, but here we’re seeing it also in terms of their movement through geographic space. " When people get depressed, he says, their mood may pull them off their routine.
    Depressed people, too, spent an average of 68 minutes using their phones each day, while people without depression only spent about 17 minutes on their phones. The software didn’t track what people did on their phones—just whether or not they were using it. But the authors have some ideas about why they saw phone activity rise with depression. " One of the things we see when people are depressed is that people tend to start avoiding tasks or things they have to do, particularly when they’re uncomfortable," Mohr explains. "Using the phone, going in and using an App, is kind of a distraction. "
    It’s preliminary research, but Mohr hopes to add to the number of smartphone sensors and use these to subtly help manage depression and spot it more quickly, without requiring any work on behalf of the user. " Being able to get people timely treatment for depression is a critical failure point in public health right now," Mohr says. An App that people download on their phones—without having to answer any questions—may help pinpoint their depressive states more effectively and help them get treatment.
According to the passage, which of the following is NOT TRUE about the experiment taken by the researchers?
选项 A、Researchers use phones with monitoring software to measure users’ depression scores directly.
B、Researchers ask the users questions about their depressive symptoms before the phone track.
C、Researchers try to find the relation between depression and the frequency of using phones.
D、Researchers compare the phone data collected about the users with their depression conditions.
答案A
解析 信息题。根据题干定位到全文，定位词为：experiment和researchers。第一段倒数第一句指出“之后研究人员将这些客观的数据与他们抑郁测试的分值进行对照”，以及第一段倒数第二句指出“通常我们只关注睡眠与活动，但是在这儿我们也通过地理空间关注他们的生活”，由此可知检测软件并不能直接测出手机用户的抑郁值，不能监测出用户在做什么，而只是通过记录用户使用手机频率等数据，来与事先已得到的用户抑郁情况进行关联对比，故[A]选项说法错误，正确答案为[A]。[C][D]选项说法正确，故排除，第一段第四句指出“在研究开始时，他们做了一次标准的问卷调查，测试抑郁的症状”，由此可知[B]说法正确，故排除。
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