“…Variable and momentary DRO schedules may prove to be a viable alternative to fixed-interval DRO procedures where reinforcement is not always provided on a fixed or predictable schedule. There are some studies that have examined the relative effectiveness of variable-momentary schedules (Quinn, Nowosielski, Kitchen, & Belfiore, 2014), fixed-momentary schedules (Hammond, Iwata, Fritz, & Dempsey, 2011), and variable-interval schedules (Rozenblat, Brown, Brown, Reeve, & Reeve, 2009) with positive outcomes. Thus, research should examine additional schedule arrangements further to identify the most effective and most practical arrangements to administer DRO procedures.…”