Abstract
This diploma thesis deals with lying and lies from the viewpoint of its types, functions and considering the development of an individual and it describes the role of lying in our lives. Then it examines the integration of the deception detection into the forensic psychology, the description of the forensic psychology itself and it tries to specify the differences between laypersons and proffesionals in their ability to detect lies.
The thesis describes the particular approaches to the detection of deception from its historical beginning to contemporary methods, such as psychophysiological and verbal tools of lie detection, observing of someone's behaviour or modern alternative methods, such as lie detection via handwriting or drawing, whose research has just started. The thesis explores also some other aspects, that can influence the deception detection, namely false memories, false confessions and the suggestive style of conducting the interrogation.