Is it REALLY a "Revolution?" (2001)

Immersive [Im]Morality (2002)

The Effects of Verbal Profanity on the Gameplay Experience in First Person Shooters (2003)

Morality Play - Creating Ethics in Video Games (2003)

How Ethics Structures are Defined and Reinforced in Video Game Environments (2007)
Master's Thesis [69 pg. PDF]