Arranjo de estímulos em treino discriminativo simples com compostos e emergência de classes de estímulos equivalentes

The simple simultaneous discrimination training with compounds (SSD) have produced variability in the results of equivalent stimuli tests. This study investigated in two studies the role of methodological variables that alter the chances of control by aspects not defi ned as relevant on the formation of stimulus equivalence classes. Study 1 evaluated the effect of using an incorrect compound (S-) for each correct compound (S+) in each SSD trial that granted the conditional discrimination context without redundancy (eg, A1B1 with A1B2 or A1B1 with A2B1). Five college students learned the basic discriminations and showed symmetrical and transitive relations. The second study assessed the effect of the inclusion of a redundant element (a black spot) in the compounds of one of the classes using a within-subject design. The effect of this manipulation in a training procedure of arbitrary conditional relations with SSI on performances in emerging relation tests, using MTS and SSI was evaluated. The twelve students showed symmetrical relations, but only fi ve showed transitive relations. These results expand the evidence that training trial settings and irrelevant characteristics of the stimuli may generate false positives in discriminative training.