Abstract
The concept of response strength and the process of strengthening by reinforcement are controversial in terms of their explanatory power. We clarify potential theoretical misconceptions following from a strength-based account such as essentialist thinking and circular reasoning. These problems also arise in the practice of latent variable modeling in psychometrics. To solve these conceptual problems, we discuss the Multilevel Model of Behavioral Selection (MLBS; Borgstede & Eggert, 2021) as an alternative theoretical framework. We use blocking from Pavlovian conditioning as an example to demonstrate how the MLBS framework prevents misconceptions arising from strength-based accounts and how it provides a more parsimonious and coherent explanation of the phenomenon. We illustrate the need for precisely defined and theoretically meaningful concepts and offer a reinterpretation of “strengthening by reinforcement.” The reconceptualization in terms of the MLBS renders the concept of response strength superfluous. We conclude by highlighting the importance of theoretical reconsideration, putting aside difficulties that arise when attempting to validate strength by empirical means.
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