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Avoidance Extinction in Equivalence Classes

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Abstract

Extinction of a response in the presence of one stimulus in an equivalence class can transfer to other related stimuli, but difficulties in establishing extinction can compromise analyses. The present study evaluated the transfer of avoidance extinction with two extinction procedures. In particular, avoidance or nonavoidance was always (Experiment 1) and never (Experiment 2) followed by point loss in the crucial extinction test phase. Both experiments began with the establishment of two equivalence classes with four abstract figures in each (A1-B1-C1-D1 and A2-B2-C2-D2). Clicking a button to avoid loss of points was trained with B1 and subsequently observed without direct training in the presence of C1 and D1. Extinction was then conducted with one group of participants with stimuli that underwent avoidance training (direct extinction with B1 and B2) and with another group with stimuli who did not undergo avoidance training (derived extinction with C1 and C2). Finally, the transfer of extinction was evaluated with stimuli from both classes. In Experiment 1, 10 of 14 participants met the avoidance extinction criteria, and the transfer of extinction occurred for 2 (1 in the direct and 1 in the derived extinction group). In Experiment 2, 10 of 13 participants met the avoidance extinction criteria, and the transfer of extinction occurred for 6 (5 in the direct and 1 in the derived extinction group). Overall, the transfer of extinction occurred only with the combination of an extinction procedure without aversive events and direct extinction.

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Funding

LSB was supported by the National Council for Scientific and Technological Development (CNPq, grant #149766/2018-1) and the Coordination of Superior Level Staff Improvement (CAPES, grant #88887.750009/2022-00). This research is part of the scientific program of the National Institute of Science and Technology on Behavior, Cognition, and Teaching (INCT-ECCE), supported by the National Council for Scientific and Technological Development (CNPq, grant #465686/2014-1) and the São Paulo Research Foundation (FAPESP, grant #2014/50909-8).

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Contributions

LSB and PD conceived the study. LSB prepared the material and collected the data. LSB and PD analyzed the data. All authors (LSB, PD, and SD) discussed the data and contributed to the writing of the article.

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Correspondence to Leandro S. Boldrin.

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Human Ethics

The study was approved by the Human Research Ethics Committee of the Institute of Psychology of the University of São Paulo (process #29904920.1.0000.5561). All the procedures performed in the studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee, and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Boldrin, L.S., Debert, P. & Dymond, S. Avoidance Extinction in Equivalence Classes. Psychol Rec 74, 1–16 (2024). https://doi.org/10.1007/s40732-023-00580-y

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  • DOI: https://doi.org/10.1007/s40732-023-00580-y

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