“…The details of LSVT LOUD have been described elsewhere (Fox, Ebersbach, Ramig, & Sapir, 2012;Sapir, Ramig, & Fox, 2011). Phase IV effi cacy and effectiveness (Robey, 2004) has been established for use of LSVT LOUD with PD (Ramig, Sapir, Countryman, Pawlas, O ' Brien, Hoehn, et al, 2001a;Ramig, Sapir, Fox, & Countryman, 2001b). In addition, some single-subject designs and case studies using LSVT LOUD with other neurological disorders have reported positive improvements for dysarthria related to ataxia (Sapir, Spielman, Ramig, Hinds, Countryman, Fox, et al, 2003), stroke (Mahler & Ramig, 2012), multiple sclerosis (Sapir, Pawlas, Ramig, Seeley, Fox, & Corboy, 2001) and, most recently, CP (Fox & Boliek, 2012;Levy et al, 2013).…”