Survey Monkey and Mechanical Turk – The Verification Code

Survey Monkey and Mechanical Turk Mechanical Turk (MTurk) has become an important data collection tool for social scientists – especially experimental political science research. For a very low cost, one can collect thousands of responses, and there is a growing literature regarding the representativeness of the samples collected from MTurk (see this 2011 article by […]

Link Between Wealth and Homo Economicus Behavior?

Do individuals who earn higher income behave more like John Stewart Mill’s Economic Man? In other words, does wealth increase the likelihood of greedy predispositions and thus increased “unethical behavior”? New research published in the early edition of  the Proceedings of the National Academy of Sciences seems to suggest this very result. Researchers from the the University of California, Berkeley and Rotman School of Management, […]

Random Assignment as an Instrumental Variable…

Hello All, I am still reading Experimental Political Science and the Study of Causality by Morton and Williams and in Chapter 5 the authors discuss how randomization in experimental design actually works like an “idea” instrumental variable (IV) in terms of controlling for confounding variables. Essentially there are three conditions for an ideal IV: (1) Statistical […]