Blue-dot task, a check designed to detect participants who fail to read the instructions. After Oppenheimer et al.[1]
An instructional manipulation check, often abbreviated IMC, is a special kind of question inserted in a questionnaire among the regular questions, designed to check whether respondents are paying attention to the instructions.[2] Discarding responses by participants who fail to read the instructions increases the signal-to-noise ratio and can thereby increase the statistical power of an experiment. The tool was developed by Oppenheimer et al.[1]
Eliminating random responses this way before performing statistical hypothesis testing may be considered a legitimate form of data manipulation, but should be duly mentioned in publications reporting on the outcome of the experiment in question.[3]
^ abDaniel M. Oppenheimer; Tom Meyvis; Nicolas Davidenko (July 2009). "Instructional manipulation checks: Detecting satisficing to increase statistical power". Journal of Experimental Social Psychology. 45 (4): 867–872. doi:10.1016/j.jesp.2009.03.009.
^Bernard E. Whitley, Jr.; Mary E. Kite (2012). Principles of Research in Behavioral Science (Third Edition). Routledge. pp. 248–249. ISBN 978-1-136-19658-4.
^Wolfgang Stroebe; Tom Postmes; Russell Spears (2012). "Scientific Misconduct and the Myth of Self-correction in Science". Perspectives on Psychological Science. 7 (6). Note 2. doi:10.1177/1745691612460687. PMID 26168129.
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