Fitting a Quadrilateral Dissimilarity Model to Same-Different Judgments
Discrimination Judgments of Frequency-Modulated Tones
Discrimination Judgments of Gray Patches
Perspective Plot for Predictions of Quadrilateral Dissimilarity Model
Predictions of Quadrilateral Dissimilarity Model
Fit a Quadrilateral Dissimilarity Model
Create Discrimination Probabilities (Psi) from Data Frame
This package provides different specifications of a Quadrilateral Dissimilarity Model which can be used to fit same-different judgments in order to get a predicted matrix that satisfies regular minimality [Colonius & Dzhafarov, 2006, Measurement and representations of sensations, Erlbaum]. From such a matrix, Fechnerian distances can be computed.