Persuasion design embeds various forms of influence and “choice architectures” in products and services to maximize the likelihood of positive behavior change. The challenge for many product designers is that persuasion design can seem full of tricks that diminish the integrity of the designer. But this approach focuses on direct outcomes, not implicit goals as is so often the case with the UCD approach.
Fabricant, Robert. Design Mind (2009). Articles>User Centered Design>Persuasive Design