Talk:Selection bias
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[edit] Anthropic bias
A specific form of selection bias is an observation selection effect, or anthropic bias. That is, for some reason you've only observed certain evidence, so your conclusions are based around what you're able to see. You fail to notice and take into account what you don't see - that much is obvious when stated like that, but how many people think "I have never seen X, therefore X does not exist". X, of course, being something that others have observed, or at least something potentially visible such as in the Black Swan problem. It's important not to confuse it with absence of evidence.
gnostic 10:35, 18 January 2012 (UTC)