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ok i get these comments ON THE REGULAR and here is an angry tweet thread about why they are wrong and should feel bad 1. ppl are always like, 'but selection bias tho.' Do you know what selection bias is, how it works, and why it's bad? twitter.com/giovannimattei

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Aella

@Aella_Girl

Sep 13, 2021

Selection bias is when you get misleading effects or conclusions or whatever due to how you selected the ppl you're asking about. As in, if you're measuring how nice ppl are and then ask ppl to volunteer for your study, you'll only be measuring ppl nice enough to volunteer.

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Aella

@Aella_Girl

Replying to

@ISTenforTen

yes i am also aware of this very basic concept

5:49 PM · Sep 13, 2021

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Replying to

i only hope you apply this level of evenhanded critique to all studies ever done with voluntary respondents (but also whenever i do bigger surveys i try to be careful to remove incentives for nonresponse that might be related to the thing im trying to test)