“…In recent years, a growing number of studies have examined the effects of matched stimulation on engagement in vocal stereotypy (e.g., Ahearn, Clark, DeBar, & Florentino, 2005;Lanovaz, Sladeczek, & Rapp, 2011;Rapp, 2007;Saylor, Sidener, Reeve, Fetherston, & Progar, 2012). In the case of vocal stereotypy, matched stimulation typically involves continuous access to stimuli that produce auditory stimulation.…”