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Abstract In the policy world, the idea of ideational robustness deals with why and how policy elements can be maintained over time and the implications this has for government strategy and activity. Past approaches to ideas and their influence on public policy stressed the disparate roles of multiple policy mechanisms such as path dependency or the nature of policy networks in either driving policy change forward or ensuring persistence of a policy. Ideational robustness on the other hand allows for the possibility of some changes occurring in policy environments and components while motivating cognitive and normative policy ideas are adapted and retained. While ideational persistence has often been identified as a source of policy stability, the possibility that some ideas allow lesser or greater levels of change in policy components while basic policy content remains more or less intact (ideational robustness) is much less well understood. The article reviews the literature on policy change and stability which highlights the influence of different policy processes on overall policy dynamics and the role played by policy learning in promoting ideational robustness. Using evidence from military doctrines and procurement in Canada and Australia, the study finds that the two countries drew different defence policy lessons from the end of the Cold War which contributed heavily to the extent of robustness of their defence policy ideas. The case studies show that ideational robustness is important but also that its study must be combined with that of other policy mechanisms and processes in order to explain overall policy change patterns.
Migone et al. (Tue,) studied this question.