title: Interviewing Suspects with Avatars: Avatars Are More Effective When Perceived as Human.
abstract: It has been consistently demonstrated that deceivers generally can be discriminated from truth tellers by monitoring an increase in their physiological response. But is this still the case when deceivers interact with a virtual avatar? The present research investigated whether the mere "belief" that the virtual avatar is computer or human operated forms a crucial factor for eliciting physiological cues to deception. Participants were interviewed about a transgression they had been seduced to commit, by a human-like virtual avatar. In a between-subject design, participants either deceived or told the truth about this transgression. During the interviews, we measured the physiological responses assessing participants' electrodermal activity (EDA). In line with our hypothesis, EDA differences between deceivers and truth tellers only were significant for participants who believed they interacted with a human operated (compared to a computer operated) avatar. These results have theoretical as well as practical implications which we will discuss.
authors.affiliation: Department of Psychology of Conflict, Risk and Safety, University of Twente Enschede, Netherlands.
authors.forename: Sabine
authors.initials: S
authors.lastname: Ströfer
authors.affiliation: Department of Psychology of Conflict, Risk and Safety, University of Twente Enschede, Netherlands.
authors.forename: Elze G
authors.initials: EG
authors.lastname: Ufkes
authors.affiliation: Department of Human Media Interaction, University of Twente Enschede, Netherlands.
authors.forename: Merijn
authors.initials: M
authors.lastname: Bruijnes
authors.affiliation: Department of Psychology of Conflict, Risk and Safety, University of Twente Enschede, Netherlands.
authors.forename: Ellen
authors.initials: E
authors.lastname: Giebels
authors.affiliation: Department of Cognitive Psychology and Ergonomics, University of Twente Enschede, Netherlands.
authors.forename: Matthijs L
authors.initials: ML
authors.lastname: Noordzij
keywords: deception; electrodermal activity; lying; operation; suspect interview; virtual avatar