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NeuroStats's profile
Manjari Narayan
Manjari Narayan
Manjari Narayan
@NeuroStats

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Manjari Narayan

@NeuroStats

Interested in inferential validity of network science. Also graphical models, statistical causal inference. Maker of skggm. Ph.D @RiceU_ECE | B.S @ECEILLINOIS

Joined November 2014

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    1. Alexey Guzey‏ @alexeyguzey Nov 15

      For the last two months I've been sleeping for 4 hours a night, thinking about Matthew Walker's "Why We Sleep". 130 hours of writing and research and 6000 words later:https://guzey.com/books/why-we-sleep/ …

      155 replies 833 retweets 3,027 likes
      Show this thread
    2. EJ Wagenmakers‏ @EJWagenmakers Nov 17
      Replying to @alexeyguzey

      I did not quite get your argument that lack of sleep does not outright kill you. Your actual claim is much modest, right? (i.e., that a specific genetic disorder fails to provide concludive evidence that lack of sleep outright kills you).

      1 reply 0 retweets 2 likes
    3. Alexey Guzey‏ @alexeyguzey Nov 17
      Replying to @EJWagenmakers

      the essay only refutes Walker's argument, but not a single person in recorded history ever died directly from lack of sleep

      2 replies 0 retweets 1 like
    4. Manjari Narayan‏ @NeuroStats Nov 18
      Replying to @alexeyguzey @EJWagenmakers

      Have you read this? https://academic.oup.com/ije/article/40/6/1431/804651 … It has a nice review of methodological issues in sleep epidemiology. Quite possible for it to be bad for an individual to reduce sleep, while variation between people who sleep less vs. more might be associated with benefits.pic.twitter.com/QVh1perkOM

      1 reply 1 retweet 4 likes
    5. Manjari Narayan‏ @NeuroStats Nov 18
      Replying to @NeuroStats @alexeyguzey @EJWagenmakers

      The issue is that we need to be really subtle about what it means to deliberately try and get more sleep, vs. what it might imply if you feel the need to sleep more as you get older. In the latter scenario, additional sleep probably an effect of other physiological problems.

      1 reply 0 retweets 2 likes
    6. Manjari Narayan‏ @NeuroStats Nov 18
      Replying to @NeuroStats @alexeyguzey @EJWagenmakers

      Any results that seek to explain correlates of variation in sleep duration between people can't tell us anything about whether an individual should sleep more or less. Ecological fallacies are surely at play here. https://www.stat.berkeley.edu/~census/ecofall.txt …

      1 reply 0 retweets 1 like
    7. Alexey Guzey‏ @alexeyguzey Nov 18
      Replying to @NeuroStats @EJWagenmakers

      yes! I totally agree. However: 1. this paper's methodology does not seem like it actually tells us anything. Ok, it's longitudinal now. It's still correlational bs with us having no idea why hours of sleep changed across time within sample

      3 replies 0 retweets 0 likes
    8. Alexey Guzey‏ @alexeyguzey Nov 18
      Replying to @alexeyguzey @NeuroStats @EJWagenmakers

      (if I read your highlight correctly) 2.I don't believe I ever wrote anything about causal effects of sleep reduction/sleep increase on individual's health in the essay? (aside from the depression thing with acute sleep deprivation and aside from anxiety about not sleeping enough)

      2 replies 0 retweets 1 like
    9. Manjari Narayan‏ @NeuroStats Nov 18
      Replying to @alexeyguzey @EJWagenmakers

      The statement "lack of sleep will not outright kill you" when read alone has the following counterfactual interpretation "if you were to sleep less, you will not die" (extreme) or "if you were to sleep less, your longevity will not suffer" (more realistic).

      2 replies 0 retweets 1 like
      Manjari Narayan‏ @NeuroStats Nov 18
      Replying to @NeuroStats @alexeyguzey @EJWagenmakers

      It definitely threw me off until I read the end of your post where you acknowledge all the state of the science. It isn't obvious that you are mainly questioning Walker's basis for making statements, rather than commenting about the science in general.

      8:27 PM - 18 Nov 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Alexey Guzey‏ @alexeyguzey Nov 18
          Replying to @NeuroStats @EJWagenmakers

          ok this is actually somewhat concerning, however - doesn't the introduction make it clear? I say that I cover five most egregious mistakes and then I say "no, ..." five times..

          1 reply 0 retweets 0 likes
        3. Manjari Narayan‏ @NeuroStats Nov 18
          Replying to @alexeyguzey @EJWagenmakers

          Your article is very clear on this, you bring up what you mean and don't mean repeatedly. The 5 bullet points in your tweet though could use some clarification. It could begin with something like "Why We Sleep" makes 5 unsupported claims" or something like that.

          1 reply 0 retweets 0 likes
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