> Now it's people who have free time and few skills trying to make money on Mechanical Turk. It just might be much much worse than that [0]. It seems that peop

> Now it's people who have free time and few skills trying to make money on Mechanical Turk. It just might be much much worse than that [0]. It seems that people sometimes discuss questionnaires with other study participants, and that sometimes the same people, while answering different questionnaires, will end up answering the same questions over and over again, if the questionnaires overlap (as they commonly do). [0] http://www.culturalcognition.net/blog/2013/7/10/fooled-twice-shame-on-who-problems-with-mechanical-turk-stud.html http://www.culturalcognition.net/blog/2013/7/10/fooled-twice... http://andrewgelman.com/2015/08/10/dan-kahan-doesnt-trust-the-turk/ http://andrewgelman.com/2015/08/10/dan-kahan-doesnt-trust-th...