“…Of most significance has been our increased understanding of key concepts underpinning PD work irrespective of the methodological perspective being adopted. For example, workplace culture (Manley, 2004), person-centredness (Titchen, 2000b;Dewing, 2004;McCormack, 2004;Nolan et al, 2004), practice context , evidence (Rycroft-Malone et al, 2003), values (Manley, 2001;Wilson, 2005;Wilson et al, 2005) and approaches to action learning for sustainable practice (Hockley et al, Critical creativity 243 2004). A number of researchers have explored the meaning of PD through conceptual analysis (Unsworth, 2000;Garbett & McCormack, 2002, action inquiry (Manley, 1997a;Binnie & Titchen, 1999;Clarke & Wilcockson, 2001;Gerrish, 2001;Clarke et al, 2004) and evaluation (Tolson, 1999;McCormack et al, 2004;Wilson & McCormack, 2006).…”