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Operationalization and Generalization in Experimental Psychology: A Plea for Bold Claims

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Experimental Psychology

Part of the book series: Theory and History in the Human and Social Sciences ((THHSS))

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Abstract

The rise of scientific psychology has been tied closely to the adoption of experimental techniques in the study of human cognition and behavior. Experiments provide an elegant and rigorous tool to test mechanistic theories, and they do so by distilling a theoretically relevant idea into an observable measure as part of a behavioral task – a process commonly dubbed as operationalization. I argue that modern experimental psychology is plagued by a continued trend toward overlooking the critical role of such operationalization. This neglect manifests in two seemingly opposing ways, either in research that jumps to inadequate conclusions by playing down the role of tasks in generating the research findings or, conversely, in research that is mainly focused on examining tasks (“paradigms”) for their own sake rather than testing theoretical ideas. This state of affairs can be rectified by re-embracing the power of explicit, theory-driven operationalization as I discuss in general terms as well as applied to the exemplary case of research on rule-violation behavior. Shifting focus back to how a theoretical idea is operationalized in a given research program will help render experimental research in psychology methodologically sound while at the same time being able to provide generalizable findings.

Author Note

The outline of this chapter was drafted during a research stay at the Center for Interdisciplinary Research, Bielefeld, and this chapter would not have come to life without their generous support. I thank Leonhard Höhnel for contributing his beautiful artwork, Felicitas Muth for her critical comments on an earlier version of this argument, Robert “How2Rulebreaker” Wirth for his continued obsession with research on rule-violation behavior, and Davood Gozli for taking this work at least as serious as we do.

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Notes

  1. 1.

    This claim might warrant additional evidence in the form of exemplary citations (quite a few of which readily come to mind) or a quantitative corpus analysis of a larger body of the published literature. I opted not to include any specific references because this chapter does not intend to point fingers at particular articles or journals. Instead, the assessment is meant to describe my subjective perception of the field.

  2. 2.

    The vocabulary employed in this sentence as well as the methods described in the context of the following studies may suggest a theoretical relation to “action dynamics” accounts (McKinstry et al., 2008). This resemblance is coincidental, however, and this work was not performed with such a theoretical perspective in mind.

  3. 3.

    Instructing participants to break a similarly instructed rule may seem somewhat unorthodox, because rule-breaking then becomes nested in a meta-rule of either following or violating an instructed stimulus-response mapping (Gozli, 2017). This is especially the case if both instructions emerge from the same source, e.g., from the same experimenter as in the case of our experiments. We still opted to do so because relying on free choices between rule-following and rule-breaking is plagued by a general reluctance to opt for rule violations so that it is difficult to find a control condition which comes with a similar experience for one or the other response. Crucially, even this artificial situation conforms to the minimal definition of rule-breaking as behavior that does not align with a rule. Whether participants do construe it the same way is a different question, of course (Gozli, 2019). This concern would be especially relevant if the results of the free choice condition had not replicated for instructed violations. Observing a similar pattern of results for instructed violations, however, seems to validate the experimental design.

  4. 4.

    I borrow the sculpting metaphor from an inspiring presentation by Thomas Schenk (personal communication) in the summer term 2014 on the two visual stream models. Like many other influential theories and models in psychology, this field of research started with an overly general claim on the neurophysiological and functional separation of two pathways for processing visual information (Milner & Goodale, 2006). Follow-up work then continued to show exceptions from this simple model, thus carving an elaborate understanding of visual processing in the context of conscious perception and action control alike (Schenk et al., 2011).

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Correspondence to Roland Pfister .

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Pfister, R. (2022). Operationalization and Generalization in Experimental Psychology: A Plea for Bold Claims. In: Gozli, D., Valsiner, J. (eds) Experimental Psychology. Theory and History in the Human and Social Sciences. Springer, Cham. https://doi.org/10.1007/978-3-031-17053-9_4

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