In metaethics — and indeed, meta-normativity — constitutivism is a family of views that hope to ground normativity in norms, or standards, or motives, or aims that are constitutive of action and agency. And, mostly because of the influential work of Christine Korsgaard and David Velleman (and, some would say, because of the also influential work of Kant and Aristotle), constitutivism seems to be gaining ground in the current literature.