“…The literature reveals numerous implicit QCTs (see Ayuso 2006, 2007) beyond Weaver (2006), but ironically also unintentionally emphasizes the limited attention afforded to aggregating and organizing this knowledge by not, for example, using a common term such as QCT. (Implicit) QCT enquiry has always privileged certification above a broader articulation of the affiliated diversity, with early (1990–2007) foci on conceptual, exploratory, and evaluative insights (Black and Crabtree 2007; Buckley 2002; Font 2002; Font and Buckley 2001; Font and Tribe 2001; Honey and Stewart 2002; Honey and Rome 2001; Toth 2002; Weaver 2006) and more contemporary (post-2007) themes of (1) demand, attitudes, and awareness (e.g., Nicholls and Kang 2012; Park and Millar 2016); (2) performance and impact (e.g., Assaf, Josiassen, and Cvelbar 2012; Erdogan and Tosun 2009; Font et al 2012); and (3) factors influencing, and/or perceptions of, [potential] adoption (i.e., barriers, facilitators, drivers, motivations, decision-making processes, and perceived benefits and challenges to adoption and implementation) (e.g., Bonilla-Priego, Najera, and Font 2011; Carasuk, Becken, and Hughley 2013). Aggregation of such implicit QCTs and their variability parameters offers additional options for the subsequent advancement of sustainable tourism practice to, for example, create a framework for QCT selection.…”