By: Christian Jarrett. Published by the British Psychological Society:
Psychology has a serious problem. You may have heard about its over-dependence on WEIRD participants - that is, those from Western, Educated, Industrialised, Rich Democracies.
More specifically, as regular readers will be aware, countless psychology studies (especially those with a social bent) involve undergraduate students, often those studying psychology.
Apart from the obvious fact that this limits the generalisability of the findings, Edward Witt and his colleagues provide evidence in a new paper for two further problems, this time involving self-selection biases.
http://bps-research-digest.blogspot.com/2010/12/when-and-how-psychological-data-is.html
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