|Göteborgs universitets publikationer
Författare och institution:
Pär-Anders Granhag (Psykologiska institutionen); Leif Strömwall (Psykologiska institutionen)
Applied Criminal Psychology: A guide to forensic behavioural sciences, s. 95-120
Charles C Thomas Publisher
Springfield, Ill, USA
Deceit occurs in all walks of life, and in many day-to-day situations it would make little sense to try to unmask the possible liar. However, in some situations we may feel a need to carefully separate what is truthful from what is not. In this chapter we will examine deception detection in legal contexts, with a particular focus on deceit in criminal investigations. The chapter is structured as follows: We start with a summary of the research conducted on objective non-verbal cues to deception; some underlying theoretical approaches are outlined, the overall findings are reviewed together with some factors which moderates people’s overt behaviour. In the next section we discuss research findings pertaining to subjective cues to deception (i.e., what people think characterize deceptive behaviour). We then summarize research on people’s ability to detect deception, both in terms of overall findings and factors which is known to moderate lie-catcher’s performance. Next we review research on how to detect deception from verbal content, and we focus on two such methods: Statement Validity Assessment (SVA) and Reality Monitoring (RM). We then enter the much debated issue of psycho-physiological lie detection and we describe and review research on the two most common forms of polygraph tests: the Control Question Tests (CQT) and the Guilty Knowledge Test (GKT). Next we briefly discuss some alternative methods for detecting deception: brain scanning, The Scientific Content Analysis (SCAN) and two forms of analysis of voice stress. We then introduce a new promising technique for detecting deception: The Strategic Use of Evidence technique (the SUE-technique); the theoretical framework motivating the SUE-technique is described, and we comment briefly upon how psychological theory can be translated to interview tactics. We close the chapter by summarizing the most important findings.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):