TY - JOUR
T1 - d' and variance of d' for four-alternative forced choice (4-AFC)
AU - Bi, Jian
AU - Lee, Hye Seong
AU - O'Mahony, Michael
PY - 2010/10
Y1 - 2010/10
N2 - 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 (pc) 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.
AB - 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 (pc) 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.
UR - http://www.scopus.com/inward/record.url?scp=78149276345&partnerID=8YFLogxK
U2 - 10.1111/j.1745-459X.2010.00301.x
DO - 10.1111/j.1745-459X.2010.00301.x
M3 - Article
AN - SCOPUS:78149276345
SN - 0887-8250
VL - 25
SP - 740
EP - 750
JO - Journal of Sensory Studies
JF - Journal of Sensory Studies
IS - 5
ER -