Rasch model

in item response theory, a model in which only one parameter, item difficulty, is specified. This is thought to be a parsimonious way to describe the relation between an item response and an underlying dimension and is thus preferred in some cases. Also called one-parameter model. See two-parameter model; three-parameter model. [proposed in 1960 by Danish statistician Georg Rasch (1901–1980)]

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Psychology term of the day

May 9th 2024

drug education

the process of informing individuals or groups about the effects of various chemical agents on the human body, usually with a special emphasis on the effects of mind-altering substances.