Dan Kahan on Mechanical Turk’s Problems(Kahan論Mechanical Turk的問題)

印象中,以前有介紹過Amazon的Mechanical Turk機制,是讓研究者得以線上尋找受訪者測試的一個機制(簡短說明在此),簡單來說就是一個受訪者協助施策者實驗的平台。而Dan Kahan在The Cultural Cognition發表了一篇對於使用Mechanical Turk的實證研究的反省,簡單來說他認為Mechanical Turk的資料具有一些嚴重缺陷存在的。他的說明分為兩部分:part 1part 2,推薦閱讀!他認為MT的樣本具有三個基本問題:1. Selection Bias,2. Prior, repeated exposure to study measures,以及3. MT subjects misrepresent their nationality。他對於使用這種平台而取得的樣本有效性很值得一讀!!

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