Abstract: In this work we hypothesize that having a virtual character in Virtual Reality will have a stronger impact on the human interactor compared to traditional 3D computer application. In order to test our theory we conducted an experiment with the same human-virtual agent interaction between a digital environment (in front of a computer screen) and a virtual reality one. The scenario used was a police interrogation where the player performed the Interrogator role whose objective was to get as much information as he could out of a Virtual Agent Suspect. Results across 31 different test subjects confirmed that users felt that the Virtual Agent they were interacting with had a higher Social Presence in Virtual Reality when compared to a computer screen.