“…A second method, known as the Concealed Information Test (CIT) or the Guilty Knowledge Test (GKT), has drawn considerable attention among researchers, but has been extensively applied only in Japan (Fukumoto, 1980;Nakayama, 2002;Yamamura and Miyata, 1990). There is a general consensus that the CIT does rely on solid scientific principles and incorporates proper control questions (e.g., BenShakhar et al, 2002;Ben-Shakhar and Elaad, 2002;Ben-Shakhar and Furedy, 1990;Lykken, 1974Lykken, , 1998.…”