The Practice Effects Of Deception And Research Of The Deception And Confession In The Mock Crime

Deception and confession is a pair of related concepts. Deception is a psychological process by which an individual deliberately attempts to convince another person to accept as true what the liar knows to be false, typically to gain benefits or to avoid losses for the liar but sometimes for others, and confession is a detailed written or oral statement in which a person admits to having committed transgression and acknowledging guilt for a crime. Over the past decades, researchers have carried out extensive research for lying behavior. From lying behavior to the neural mechanisms of lying, they acquired a lot of valuable achievements that discovered the role that dorsolateral prefrontal cortex, ventrolateral prefrontal cortex, prefrontal cortex, anterior prefrontal cortex palyed in behavior of deception. So far the research for confession, however, is merely behavioral research, but not the investigation of neural mechanism, and little has been known in the cognitive process. From the perspective of cognitive resources, this study fills the blank of understanding of neural mechanism in confesion. Concealed Information Test paradigm(CIT) and differentation of deception paradigm(DDP) are utilized in the three consecutive experiments. The first experiment investigate whether a major training can promote more automated deception while with less cognitive load. This experiment used E-prime to present the experimental materials, and collect responsing data. Experiment two explored the brain activity differences in lying and truth-telling. Polygraph(Biopac MP150) and Functional Near-Infrared Spectroscopy(fNIRS) record the skin electric and Blood Oxygen Level Dependant(BOLD) signal of participants at the same time. In the third experiment, participants who instructed to deceive in experiment two would be then asked to confess the very deceit of prior experiment. fNIRS and polygraph also beused in this experiment. to record the difference activity between lying and truth-telling.The current research has achieved such conclusions:1. Difference between honesty and deception are insignificant via the practice of lying;2.Reaction time in deceit is longer than honest and reaction time of honest is longer than confession;3.Compared to honesty, deceiving have more activation in dorsolateral prefrontal cortex(DLPFC). This result may be attributed for that more resources in executive control were used in lying behavior.4.We found that the dorsolateral prefrontal cortex were more active in honesty relative to confessing. It indicate that people would employ less executive control resources in confession, and further, confession could be more advanced honesty.useactivation degree of honest is more than confession, reflects the execution of the control is more than confession.