“…A study by Stevens and Verhoeven (2011) to stress in suspects. This is unnecessary and undesirable, because it may increase the chance of obtaining an unreliable account or even a false confession (Gudjonsson, 2010;Kassin, 2017). In the past, several scientists have questioned the appropriateness of the GIS (e.g., Boon et al, 2016;Duker & Stevens, 2009;Israëls & Horselenberg, 2010;Kortlever, 2011;Nierop, 2005;Odinot et al, 2015;Siemering & van der Laan, 2016;Stevens & Verhoeven, 2010Verhoeven & Duinhof, 2017;Van Koppen, 1998Vrij, 1998Vrij, , 2010), yet to date no empirical research has examined the potentially adverse effects of the GIS, and teachers at the Dutch Police Academy continue to use the Interrogation Manual to train police officers in interrogation techniques.…”