dprime.oddity {psyphy}

d' for 3 Stimulus Oddity Paradigm

Description

Calculate d' for a 3 stimulus (triangular) paradigm. Two of the stimuli are the same and the observer must designate the stimulus that is different.

Usage

dprime.oddity(Pc.tri)

Arguments

Pc.tri

numeric in (1/3, 1). The proportion of correct responses for an unbiased observer.

Value

Returns the value of d'

Author(s)

Kenneth Knoblauch

References

Frijters, G. S., Kooistra, A. and Verijken, P. F. G. (1980) Tables of d' for the triangular method and the 3-AFC signal detection procedure. Perception & Psychophysics, 27, 176–178.

MacMillan, N. A. and Creeman, C. D. (1991) Detection Theory: A User's Guide Cambridge University Press

Green, D. M. and Swets, J. A. (1966) Signal Detection Theory and Psychophysics Robert E. Krieger Publishing Company

See Also

dprime.mAFC, dprime.SD, dprime.ABX

Examples

dprime.oddity(0.8)