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. 2021 Sep;116(2):208-224.
doi: 10.1002/jeab.713. Epub 2021 Aug 26.

Training sequence effects on emergent conditional discriminations: Replication and extension to selection-based training

Reagan E Cox  1 , Anna Ingeborg Petursdottir  1
Affiliations

Training sequence effects on emergent conditional discriminations: Replication and extension to selection-based training

Reagan E Cox et al. J Exp Anal Behav. 2021 Sep.

Abstract

We examined the replicability and generality of a previously reported training sequence effect on emergent conditional discriminations in the intraverbal naming task. In Experiment 1, a tact-intraverbal (TI) group learned first to vocally label 6 visual patterns and then to intraverbally relate pairs of verbal labels, whereas an intraverbal-tact (IT) group received the same training in the opposite sequence. Emergent conditional discriminations among pattern stimuli were assessed in match-to-sample (MTS) format. Experiment 2 was identical, except vocal tact and intraverbal training were replaced with selection-based training in which the verbal labels were text stimuli. Compared to the IT sequence, the TI sequence resulted in greater mean accuracy at test (Experiment 1), higher yields (Experiment 2), and shorter reaction times (Experiment 2). Experiment 2 data suggested the TI group's performance might be less dependent on intact intraverbal relations relative to the IT group, but related to participants' reports of visualization during intraverbal training. The results suggest the sequence effect is replicable and occurs in experimental preparations commonly used to study derived stimulus relations. They also provide novel support for the hypothesis that participant behavior during training alters sources of stimulus control available at test.

Keywords: conditional discrimination; derived stimulus relations; humans; matching to sample; naming.

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