Carpentier, F., Smeets, P. M., & Barnes-Holmes, D. (2004). Equivalence-equivalence: Matching stimuli with same discriminative functions. The Psychological Record, 54, 145-162.
The Authors, researchers at eh National University of Ireland and Leiden University, conducted a study which examined whether the BC-BC performances could have resulted from matching stimuli with same discriminative (S+, S-) properties. The experiment's findings indicate that the BC-BC performances result from matching same discriminative functions. The implications of these findings for equivalence-equivalence as a model for classical analogies are discussed.