d' and variance of d' for four-alternative forced choice (4-AFC)

Jian Bi; Hye Seong Lee; Michael O'Mahony

doi:10.1111/j.1745-459X.2010.00301.x

d' and variance of d' for four-alternative forced choice (4-AFC)

Jian Bi
, Hye Seong Lee
, Michael O'Mahony

Department of Food Science & Biotechnology

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The four-alternative forced choice (4-AFC) is one of a family of m-AFC tests used in Psychology. Based on a detection-theoretic model, for a given d' it is slightly more powerful than the 3-AFC and 2-AFC. Although its potential use in sensory food science is limited, there are occasions when it will be used. Accordingly, tables of d' values for given proportions of correct responses (p_c) along with corresponding values of B, for computing variances, are given in this paper. Power comparisons are also made between 2-AFC, 3-AFC and 4-AFC tests.

Original language	English
Pages (from-to)	740-750
Number of pages	11
Journal	Journal of Sensory Studies
Volume	25
Issue number	5
DOIs	https://doi.org/10.1111/j.1745-459X.2010.00301.x
State	Published - Oct 2010

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d' and variance of d' for four-alternative forced choice (4-AFC)

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