Constructs, operationalisations, mediators, and why behavior change techniques cannot change behavior

In health psychology, there exists a lack of conceptual clarity regarding a number of terms that are at the core of psychological science. True, this problem exists in psychology in general, but the terms Behavior Change Technique (from the BCT taxonomy approach) and Method for Behavior Change (from the Intervention Mapping approach) have exacerbated matters within behavior change science. In this post, I will discuss this in more detail, based on a recent Twitter discussion that erupted around whether a psychological variable targeted by a behavior change technique is a mediator or not:

In this post, I will explain more in detail what I mean (you may want to read the Twitter thread first though).

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