They then ran a series of comparisons looking at whether the problematic users were different from non-problematic users They found that problematic users had worse grades, more alcohol abuse (just), and banged more people on average
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The thing is, this study has ~dozens~ of limitations/drawbackspic.twitter.com/RtraFjOk6L
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For one thing, the sample is hopelessly biased. Think about university students who'll willingly do a 156-question survey for free online instead of literally anything else
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Then, think about what happens if you only include the people who answer every question. That's taking a biased sample to a whole new level
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It's also cross sectional in design, which means that people just answered a single survey, and there was absolutely no control for confounding That means you can't infer any causality whatsoeverpic.twitter.com/bM2UtCekgW
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Does mobile phone use cause banging? Does banging cause mobile phone use? Does heavy alcohol use, or some third unmeasured thing, cause both? We have absolutely no ideapic.twitter.com/I9cwpmUPaf
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This type of study is great in that it is easy to do and very cheap, but it's bad in that the information you can take home from it is virtually nothing at all
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In other words, what this study showed is that, in a highly self-selected group of university students, using smartphones a bunch was slightly correlated with poor health
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If that sounds like a boring, slightly meaningless finding, that's because IT IS
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Especially when you consider that "problematic" smartphone users answered yes to questions like these...pic.twitter.com/BilLivbXgO
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News sites love studies bagging out smartphones, because they're still new and scary, but it still seems pretty unlikely that they're actually causing people to get laid/depressed/alcoholism
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