the perception of small differences between two stimuli. For example, distinguishing between identical twins might require expert performance.

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February 16th 2025

multiple comparison test

any of various statistical procedures used to follow up on a significant result from an analysis of variance by determining which groups in particular differ in their mean values. Examples include Duncan’s multiple range test, the Fisher least significant difference test, the REGWQ test, the Scheffé test, and Tukey’s honestly significant difference test. See also post hoc comparison.