“…A series of elegant studies, led by Marcel van den Hout and Merel Kindt (2003a, 2003b demonstrated that repeated checking of virtual objects by nonclinical participants reliably leads to significant decreases in memory confidence, vividness and detail; memory accuracy was unaffected. The findings were replicated for the repeated checking of real, possibly threatening objects in undergraduate students (Coles, Radomsky & Horng, 2006;Radomsky, Gilchrist & Dussault, 2006), for mental checking (Radomsky & Alcolado, 2010) and for checking using perseverative, compulsive-like staring (van den Hout et al, 2008Hout et al, , 2009. One of the hallmarks of clinical research in OCD is that experimental studies such as those conducted by van den Hout and colleagues become incorporated into treatment methods.…”