Influence Of Negative Emotions In The Concealed Information Test (CIT)

Since the later period of 20th century, with the jury system's widely used in the world, as a technology of polygraph, Concealed Information Test also has been focus of attention. But the applicability of CIT is more limited.The effects of false memories on polygraph examinations with the Concealed Information Test (CIT) were investigated by using the Deese-Roediger-McDermott (DRM) paradigm, which allows participants to evoke false memories. Physiological responses to questions consisting of learned, lure, and unlearned items were measured and recorded. The results indicated that responses to lure questions showed critical responses to questions about learned items. These responses included repression of respiration, an increase in electrodermal activity, and a drop in heart rate.These results suggest that critical response patterns are generated in the peripheral nervous system by true and false memories.We hypothesis that different emotion should change the responses of peripheral nervous, so we use electrode stimulate to produce a negative emotion, and our result indicated that emotion could interference the identify rate of CIT.