Personenidentität in der Welt der Begegnungen: Menschliche Persistenz, diachrone personale Identität und die psycho-physische Einheit der Person. De Gruyter 2013

What does it mean to persist as an individual person throughout the course of a lifetime? Wagner develops a theory that regards persons as psychophysical actors whose identity is determined by the contingent de facto norms and structures of the world of action. Personal identity is understood as being a potentially mutable relationship that localizes our existence on a continuum between humanness and personhood.