whoa, PEW surveyed turkers… makes sense, just surprisedhttps://twitter.com/pewinternet/status/759197088143974401 …
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imo, hcomp has always ~assumed this (& probably fine), but amazing ppl have ignored mturk becoming professional subject pool
In survey & focus group research, there are formal steps to exclude the professional subjects. Too corrupting & untrustworthy.
It's not ok to use a professional subject pool for most things. Not if you care about results.
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