“…Subsequently, Lanovaz and Sladeczek (2012) expanded that definition to explicitly include vocal response forms that are categorized as vocal stereotypy (e. g., acontextual vocalizations, humming, and scripting). Behaviors in both categories persist due to the sensory stimulation produced directly by the behavior (e.g., Piazza, Adelinis, Hanley, Goh, & Delia, 2000;Rapp, 2008). These definitions provide general categories for response forms that can vary substantially from individual to individual.…”