Intrinsic Uncertainty and Transducer Functions

Norma van Surdam Graham

in Visual Pattern Analyzers

Published in print December 1989 | ISBN: 9780195051544
Published online January 2008 | e-ISBN: 9780199872183 | DOI:

Series: Oxford Psychology Series

 Intrinsic Uncertainty and Transducer Functions

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Intrinsic uncertainty arises from sources intrinsic to the observer, in particular from the observer's inability to attend to only the relevant information (attention limitations) and inability to remember the set of possible stimuli (memory limitations). This intrinsic uncertainty can be incorporated into the models based on multiple independent analyzers that were presented in the previous chapter for cases of extrinsic uncertainty. This chapter considers the interaction of uncertainty assumptions with the transducer function (output versus input function) of individual analyzers; the overall transducer function of all the analyzers used by the decision rule; the psychometric function for the observer; and the ROC curves. The control of attention and individual differences is discussed.

Keywords: uncertainty experiments; summation experiments; multidimensional signal detection theory; ROC curves; psychometric functions; attention; memory; individual differences

Chapter.  11371 words.  Illustrated.

Subjects: Neuropsychology

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