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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

July 12th 2024

amotivational syndrome

amotivational syndrome

a behavior pattern characterized by loss of drive and initiative. It is commonly seen in schizophrenia. The pattern is also believed to be associated with cannabis abuse, based on anecdotal observations of the lifestyles of chronic cannabis users in various cultures around the world. There is, however, little empirical support for this association. See anhedonia.