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Shen-yi Liao

Here is another recent popular press article on MTurk:

Eddy Nahmias

For the first time in my x-phi experience, I have just used mTurk. In my past studies, I've almost* always used students (first at FSU and now at GSU, where I've probably had over 3000 students in critical thinking courses take surveys, mostly about free will, responsibility, choice, etc.).

A few armchair reflections:
-mTurk is amazingly fast (got 65 subjects in a matter of hours) and easy.
-given the time they took and the lack of failing comprehension and attention checks (4 questions in all, with only a handful of misses), they seem to be doing the task well.
-they differed in small but (probably statistically significant) ways from the GSU students on a couple scenarios that both groups took.
-they are less demographically diverse than the GSU sample in some noticeable ways--fewer females (44%), many more white people and fewer of other races (GSU is non-representative with about 40% African-American), more liberal (60% on liberal side of scale, 20% neutral, only 20% on conservative side), and way less religious (than GSU and certainly than US population: 60% 'not religious at all' and 12% more in the slot between that and 'somewhat religious').

Anyway, I'd be interested to hear if x-phi researchers using mTurk have found the participants to be reliable and to work well for their purposes.

*For the Free Will Inventory Thomas created (with 4 others including me), we used Qualtrics to get a representative sample of US participants.

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3QD Prize 2012: Wesley Buckwalter