ABSTRACT
Having explored the theoretical basis for the process of deception (Chapter 2), in this chapter we will now explore how the differences in the behaviours of liars and truth-tellers are consistent or contrast with those accounts. After first providing a broad overview of the (lack of) diagnosticity of cues, this chapter will unpack the cues to deception in light of the arousal, self-presentational, and working memory accounts of the deception process considered in Chapter 2. What we will discover is that the liar spontaneously produces few cues to deception, if they exist at all, and if they do exist, they will appear very infrequently. In the following chapters we will explore how this impacts the lie-truth decision and its accuracy.
