PSYCH291 Lecture Notes - Lecture 13: Amazon Mechanical Turk, Convenience Sampling, Sampling Bias
16 Dec 2018
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Document Summary
An increasingly popular participant pool for obtaining online convenience samples (with self-selection) Quick and easy way to get data. Participant pool (external validity) fairly diverse participant pool (500,000 turkers , 190 countries) tend to be relatively young, low income, well-educated. More generalizable samples compared to university samples. Self-selected/voluntary issue with external validity - unknown whether the people who do your study that are different than the general population. E. g. relationship satisfaction = those who are satisfied are more inclined to do the study mechanical turk: pay. 1/2 of turk workers make less than an hour less than minimum wage in us. People who really need the money will be coerced to do these studies to get whatever money they can. mechanical turk: data quality. Equivalent high test-retest reliability (compared to lab studies) for personality measures. results from lab studies tend to replicate on mturk there are incentives in place to motivate turkers to take studies seriously.
