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Wundt curve

a bell-shaped curve illustrating that as a stimulus intensity (e.g., light) increases from low to moderate levels, its effect is pleasant or rewarding, but that as it increases to higher levels, its effect is unpleasant and even painful. The Wundt curve has been related to theories of human motivation, novelty seeking, and aesthetics, the latter most notably in the work of Daniel E. Berlyne. See arousal-reduction mechanism. [developed by Wilhelm Wundt]

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June 18th 2024

two-parameter model

two-parameter model

in item response theory, a model that specifies two parameters affecting an individual’s response to a particular test item: (a) the difficulty level of the item and (b) the item discriminability. See also Rasch model; three-parameter model.