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Predicting and Influencing the Single-Trial-Type-Dominance-Effect: the First Study

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Abstract

A recently published article reported a particular pattern of responding that has been observed on the Implicit Relational Assessment Procedure (IRAP), referred to as a Single-Trial-Type-Dominance-Effect (STTDE; Finn, Barnes-Holmes, & McEnteggart in The Psychological Record, 68(1), 11–25, 2018). To account for the phenomenon, the Differential Arbitrarily Applicable Relational Responding Effects (DAARRE) model of IRAP performance was proposed. The DAARRE model predicts the STTDE in terms of an overlap in the functional properties of the label, target, and response-option stimuli presented within an IRAP. This article presents an initial attempt at engineering a STTDE within an experimental session. Forty participants were exposed to a series of training procedures and IRAPs. The training procedures consisted of a series of trials that aimed to establish a “True” function for a picture stimulus that was subsequently presented in the IRAP; participants were then exposed to an IRAP in which participants were required to respond “True” on a specific trial-type that presented that picture. Consistent with the DAARRE model, the STTDE emerged for the predicted trial-type, with analyses at both the group and individual participant level supporting this conclusion. The implications of the findings for future research on analyzing the dynamics of arbitrarily applicable relational responding are discussed.

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Notes

  1. The word “appropriate(ly)” as used in this sentence simply implies responding in accordance with the prevailing contingencies in the natural environment.

  2. Finn et al. (2018) found that the STTDE appeared to be relatively stronger for participants with extended histories of completing latency-based measures (see General Discussion of Finn et al. for a post-hoc explanation of this moderating variable). To ensure that all participants in the current study had a minimum level of experience with the IRAP, they completed a familiarization IRAP before the experimental manipulation (the stimuli from the familiarization IRAP were never used in subsequent training and testing).

  3. Because the IRAPs that followed each iteration of the function training task presented only two test block-pairs, the D-IRAP scores comprised the average of these two pairs of test blocks. In a small number of cases (N = 11) where participants did not maintain the performance criteria across a test block-pair, a D-IRAP score was produced from one test block-pair. It should be stressed, however, that each participant completed four separate IRAPs, each with two test block-pairs (i.e., eight test block-pairs in total). The effects reported in the current study were thus generated from a minimum of five test block-pairs for each participant. Therefore, the effects reported here are based on more data points than is typical in IRAP research. The data from the first Test IRAP completed by participant 2 were excluded from all analyses due to a translation error in the stimulus set. Participant 2 highlighted the error, and the stimuli were removed from the stimulus pool and were thus not presented to any other participant.

  4. Secondary analyses employing the performance criteria of mean latency of less than 2,000ms and accuracy of greater than 75% are presented in Appendix A.

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Acknowledgements

The data for the current manuscript was collected and prepared with the support of the FWO Type I Odysseus Programme at Ghent University, Belgium.

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Correspondence to Martin Finn.

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

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional 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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Finn, M., Barnes-Holmes, D., McEnteggart, C. et al. Predicting and Influencing the Single-Trial-Type-Dominance-Effect: the First Study. Psychol Rec 69, 425–435 (2019). https://doi.org/10.1007/s40732-019-00347-4

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  • DOI: https://doi.org/10.1007/s40732-019-00347-4

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