creators_name: Alexander, JRM
creators_id: J.Alexander@utas.edu.au
type: monograph
datestamp: 2006-12-13
lastmod: 2008-07-18 09:44:27
metadata_visibility: show
title: An approximation to d' for n-alternative forced choice
ispublished: unpub
subjects: 380109
subjects: 380101
subjects: 380100
full_text_status: public
monograph_type: project_report
keywords: Mathematical Psychology, forced choice, signal detection theory, nAFC
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.
date: 1990
date_type: published
publisher: Psychology Department
place_of_pub: Hobart, Tasmania
pages: 6
institution: University of Tasmania
department: Psychology Department
thesis_type: UNSPECIFIED
referencetext: Green, D. M. & Swets, J. A. (1966). Signal detection theory and psychophysics. New York: Wiley.
Hastings, C. (1955). Approximations for digital computers. Princeton: Princeton University Press.
Smith, G. A. (1986). Inspection time and response strategies in a choice response task. Personality and individual differences, 7, 701-707.
Swets, J. A. (1964). Signal detection and recognition by human observers. New York: Wiley.
citation: Alexander, JRM (1990) An approximation to d' for n-alternative forced choice. Project Report. Psychology Department, Hobart, Tasmania. (Unpublished)
document_url: http://eprints.utas.edu.au/475/1/nAFCrev207.pdf
document_url: http://eprints.utas.edu.au/475/2/Copy_of_nAFC.xls