“…The difficulty in replicating a real classroom environment with strict experimental controls has challenged many researchers in this area. Pedagogical studies have been conducted on a variety of subjects within the field of psychology including family systems (Alexander & Waxman, 2000), psychotherapeutic techniques (Hesley & Helsey, 1998;McNeilly & Wengel, 2001), and social psychology (Kennedy, Şenses, & Ayan, 2011). Many studies do not use random assignment or attempt to control for extraneous variables, thus lowering the internal validity of the studies (e.g., Badura, 2002;Christopher, Walter, Marek, & Koenig, 2004;Paddock, Terranova, & Giles, 2001).…”