Using Behavior to Determine Hostile Intent in a Security Checkpoint Context: Do Liars Betray Ill Intent Through Incongruent and Referential Behaviors?
MetadataShow full item record
This study examines the role of macro-level behaviors in the judgment of veracity at a security checkpoint. In Phase 1, some participants are randomly assigned to pass through a security checkpoint while carrying a mock weapon. These participants must lie during a security interview in an attempt to convince a uniformed police officer that they are not carrying the mock weapon. Both truthful and deceptive participants earn a monetary reward for being judged truthful by the interviewer, or face additional time at the experiment as a punishment for being judged deceptive. The participants' macro-level behaviors in the body are analyzed and examined for between-group differences based on veracity. In Phase 2, a group of untrained judges are asked to access the veracity of the Phase 1 participants from video clips of the security interview. The results of both phases are analyzed for reliable cues to veracity, the relationship between behavior and judgment accuracy, and the relationship between behaviors and the appearance of veracity. While there are no behavioral differences found between veracity conditions, the study uncovers significant behavioral predictors to the appearance of deception.