“…That is, in addition to arranging periods in which reinforcement for a target behavior is available and unavailable (i.e., EXT), researchers have associated these periods with a variety of salient environmental stimuli to promote stimulus control. In particular, multiple schedules have been used (a) to promote stimulus control over high-rate appropriate behaviors (e.g., frequent requests for adult attention) in typically developing children (Cammilleri, Tiger, & Hanley, 2008; Tiger & Hanley, 2004, 2005; Vargo, Heal, Epperley, & Kooistra, 2014), (b) to teach individuals with intellectual disabilities who engage in severe problem behavior to request the putative reinforcer maintaining problem behavior only when the S D is present and to gradually tolerate longer periods in which the S D is absent (Betz, Fisher, Roane, Mintz, & Owen, 2013; Fisher, Kuhn, & Thompson, 1998; Hagopian, Toole, Long, Bowman, & Lieving, 2004; Hagopian, Contrucci Kuhn, Long, & Rush, 2005; Hanley, Iwata, & Thompson, 2001; Rooker, Jessel, Kurtz, & Hagopian, 2013), and (c) to signal periods of punishment in the treatment of severe problem behavior maintained by automatic reinforcement displayed by individuals with intellectual disabilities (Anderson, Doughty, Doughty, Williams, & Saunders, 2010; Doughty, Anderson, Doughty, Williams, & Saunders, 2007; Rollings & Baumeister, 1981). …”