“…As examples, Gordon-Brannan and Hodson (2000) used continuous speech samples; Hustad, Allison, McFadd, and Riehle (2014) used language samples; and Monsen (1981) used a single word intelligibility task, with all considering intelligibility measures below 50%-60% to indicate severely impaired speech. In a similar manner, a commonly used criterion to include children with highly unintelligible speech who require augmentative and alternative communication (AAC) in research studies is having speech less than 50% comprehensible on a single word comprehensibility task (Binger, Kent-Walsh, Berens, Del Campo, & Rivera, 2008;Binger & Light, 2007;King, Binger, & Kent-Walsh, 2015). Thus, despite differences in tasks, an overall pattern for children considered to have severe speech impairments is apparent with a maximal intelligibility (or comprehensibility, depending on the study) of approximately 50%-60%.…”