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An approximation to d' for n-alternative forced choice

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Alexander, JRM (1990) An approximation to d' for n-alternative forced choice. Project Report. Psychology Department, Hobart, Tasmania. (Unpublished)

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Abstract

An approximation suitable for computer estimation of d' from the total proportion of correct responses in an n-alternative forced choice experiment for any n is described. This approximation implies that ogival psychometric functions can be interpreted as linear in d', which provides signal detection threshold or sensitivity measures allowing comparisons between psychometric functions with different numbers of stimulus alternatives.

Item Type: Report (Project Report)
Keywords: Mathematical Psychology, forced choice, signal detection theory, nAFC
Publisher: Psychology Department
Date Deposited: 13 Dec 2006
Last Modified: 18 Nov 2014 03:12
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