“…For instance, targets for behavioral intervention like "mouth drying" or "posture control" are missing. Because of the chosen age range from 0 to 18 years, six interesting SCEDs studies by Lancioni and colleagues on behavioral interventions that make use of microswitch technology to reduce drooling in individuals with multiple disabilities and severe to profound learning disabilities with participants >18y are not included in this LOW-LEVEL EVIDENCE FOR BEHAVIORAL INTERVENTION 3 systematic review (G. E. Lancioni et al, 2008aLancioni et al, , 2008bLancioni et al, , 2009cLancioni et al, , 2011aLancioni et al, , 2011bLancioni et al, , 2013. One might argue that developmental age in this population is more relevant than chronological age, and as a consequence, chronological age is no valid reason to exclude these studies in this systematic review.…”