Digital nudges are often treated as modular additions to interfaces, but a new preprint on arXiv suggests they can interfere with one another. The study, "Digital Nudge Effects in Optimal Stopping Games: Antagonistic Interactions in Layered Choice Architectures," looks at how nudges behave when deployed together rather than alone.
Using optimal stopping games—tasks in which people must decide when to accept an option from a sequence—the researchers examined the individual and combined effects of anchoring and other choice-architecture techniques. The results point to antagonistic interactions: a nudge that is effective on its own may lose its benefit, or even distort decisions, when layered with another.
The finding matters for designers who stack multiple behavioral interventions into a single interface. The authors highlight that little is known about nudge combinations, and their work suggests that layered choice architectures should be evaluated as a whole, not component by component.