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John Henry effect

an effect in which rivalry between a control group and an experimental group leads to competitive efforts that disturb the whole basis of the experiment. It is a particular danger in industrial psychology experiments that attempt to compare the outputs of groups working under different task conditions. The term derives from the legend of John Henry, a railroad steel driver who worked himself to death with a steam drill.

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Psychology term of the day

June 18th 2024

upper hinge

upper hinge

the point in a distribution of values above which lie one fourth of the data and below which lie the other three fourths of the data. It is equivalent to the third quartile. Compare lower hinge.