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slatestarcodex's profile
Scott Alexander
Scott Alexander
Scott Alexander
@slatestarcodex

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Scott Alexander

@slatestarcodex

I have a place where I say complicated things about philosophy and science. That place is my blog. This is where I make terrible puns.

slatestarcodex.com
Joined June 2013

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    Scott Alexander‏ @slatestarcodex 18 Mar 2017

    Can ppl analyze selection bias by asking "Did you almost decide not to take this survey?" & seeing if that group's systematically different?

    10:13 AM - 18 Mar 2017
    • 15 Retweets
    • 72 Likes
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    11 replies 15 retweets 72 likes
      1. New conversation
      2. Excellent A-Grade Premium-Hard Mediocrity‏ @enkiv2 18 Mar 2017
        Replying to @slatestarcodex

        Can people reliably estimate how marginal their decision to take a survey is? & is individual marginality representative?

        1 reply 0 retweets 0 likes
      3. Excellent A-Grade Premium-Hard Mediocrity‏ @enkiv2 18 Mar 2017
        Replying to @enkiv2 @slatestarcodex

        I don't know that "almost didn't take this survey" has any relation to "is in an underrepresented group".

        2 replies 0 retweets 1 like
      4. Scott Alexander‏ @slatestarcodex 18 Mar 2017
        Replying to @enkiv2

        Maybe I should have said "response bias"?

        1 reply 0 retweets 0 likes
      5. Excellent A-Grade Premium-Hard Mediocrity‏ @enkiv2 18 Mar 2017
        Replying to @slatestarcodex

        maybe, but even that seems like the kind of thing that would get a confabulated response.

        0 replies 0 retweets 0 likes
      6. End of conversation
      1. TOoᴼᵒº˙⁰0₀ₒ.·ph‏ @tophtucker 18 Mar 2017
        Replying to @slatestarcodex

        You could try a spectrum of weak-to-strong incentives/compensation for participation & see results' sensitivity at margin

        0 replies 0 retweets 7 likes
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      1. New conversation
      2. Pete Alex Harris in Barcelona for a bit‏ @ScavengerEthic 18 Mar 2017
        Replying to @slatestarcodex

        need to add a followup stupid question too, to see how many of that group are in the 5% who answer every question randomly.

        1 reply 0 retweets 2 likes
      3. Pete Alex Harris in Barcelona for a bit‏ @ScavengerEthic 18 Mar 2017
        Replying to @ScavengerEthic @slatestarcodex

        obtw, guess how horrified I am every time a major election or referendum affecting me is decided on a <5% margin.

        0 replies 0 retweets 3 likes
      4. End of conversation
      1. L.  ☕️. Ritter‏ @paniq 19 Mar 2017
        Replying to @slatestarcodex

        100% of people would take a survey when asked to

        0 replies 0 retweets 3 likes
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      1. New conversation
      2. Chris Said‏ @Chris_Said 18 Mar 2017
        Replying to @slatestarcodex

        You'd need to make some assumptions, e.g. the responses are equidistant between all three groups.

        1 reply 0 retweets 1 like
      3. Chris Said‏ @Chris_Said 18 Mar 2017
        Replying to @Chris_Said @slatestarcodex

        You can measure the difference between the two groups of test takers. And then apply that difference to non- test takers.

        0 replies 0 retweets 1 like
      4. End of conversation
      1. Paul Novosad‏ @paulnovosad 18 Mar 2017
        Replying to @slatestarcodex

        Easier: look for differential responses of people who quit halfway through

        0 replies 0 retweets 1 like
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      1.  🐝‏ @beeintokyo 23 Jul 2017
        Replying to @slatestarcodex

        as i move closer to completing a survey, the chance of me lying on at least one question edges ever closer to 100% #lizardlife

        0 replies 0 retweets 0 likes
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      1. Daniel Böttger‏ @7SecularSermons 19 Mar 2017
        Replying to @slatestarcodex

        "How committed r u 2 this survey? A) just looking B) might complete it if short / fun C) happy to help D) def doing this"

        0 replies 0 retweets 0 likes
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      1. Arthur B.  🚀‏ @ArthurB 18 Mar 2017
        Replying to @slatestarcodex

        have high incentives to take a very quick survey, and use that to control representation in the longer one.

        0 replies 0 retweets 0 likes
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      1. Anthony O'Reilly‏ @AnthonyGOReilly 18 Mar 2017
        Replying to @slatestarcodex @saoili

        Interesting notion... I'd go for a feelings thermometer for some extra granularity

        0 replies 0 retweets 0 likes
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