“…Shifts in thinking about the field's direction have been influenced by factors other than the rationale for unification (Anderson, 1992;Leahy & Szymanski, 1995). Such factors include scientific breakthroughs; challenges in philosophical and ethical realms; policy shifts at the federal, state, and local levels (Parker, 1990); consumerism (Kosciulek, 1999); role and function studies (Leahy, Chan, & Saunders, 2003;Muthard & Salamone, 1977); models of disability (Corrigan & Lam, 2007;Curl & Sheldon, 1992;Schriner, 1995); professional organizations (Leahy & Tarvydas, 2001); accreditation (Shaw et al, 2006); and professional membership studies (Cook, 1990;Trotter & Kozochowicz, 1970).…”