In sum, it is these important commonality that suggest we are dealing with different forms of OD rather than different species of consulting and change altogether. Although the intervention strategies and practices of Dialogic OD may involve different premises about the nature of social systems and how they change, they also retain the core values and ideals of classical, Diagnostic OD such as free and informed choice, authenticity, integrity, participation, and collaboration. The role of the Dialogic OD consultant is also similar in important ways to the diagnostic one, although, as noted, the nature of the suggested processes and underlying premises may differ. Finally, Dialogic OD is as concerned with developing more effective groups, organizations, and especially broader systems as Diagnostic OD is, and they share implicit theories of what a more developed system looks like.