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  • PsycARTICLES:
  • Citation and Abstract
Absolute Identification by Relative Judgment.
Stewart, Neil; Brown, Gordon D. A.; Chater, Nick
Psychological Review, Vol 112(4), Oct 2005, 881-911.
In unidimensional absolute identification tasks, participants identify stimuli that vary along a single dimension. Performance is surprisingly poor compared with discrimination of the same stimuli. Existing models assume that identification is achieved using long-term representations of absolute magnitudes. The authors propose an alternative relative judgment model (RJM) in which the elemental perceptual units are representations of the differences between current and previous stimuli. These differences are used, together with the previous feedback, to respond. Without using long-term representations of absolute magnitudes, the RJM accounts for (a) information transmission limits, (b) bowed serial position effects, and (c) sequential effects, where responses are biased toward immediately preceding stimuli but away from more distant stimuli (assimilation and contrast). (PsycINFO Database Record (c) 2011 APA, all rights reserved)
  • Digital Object Identifier:
  • 10.1037/0033-295X.112.4.881
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