aes24 International Evaluation Conference

Authors: Phillip Belling (NSW Department of Education), Liam Downing (NSW Department of Education, AU)

This paper is aimed at early career and experienced evaluators interested in realist evaluation, but with concerns about the time a realist approach might take. The authors respond to this concern with an innovative blending of realist and developmental evaluation. Participants will exit the room with a working understanding of realist developmental evaluation, including its potential for adaptive rigour that meets the needs of policy makers and implementers.

Realist evaluation is theoretically and methodologically robust, delivering crucial insights about how, for whom and why interventions do and don't work (House, 1991; Pawson & Tilley, 1997; Pawson, 2006). It aims to help navigate unfamiliar territory towards our destination by bringing assumptions about how and why change happens out in the open.

But even realism's most enthusiastic practitioners admit it takes time to surface and test program theory (Marchal et al., 2012; van Belle, Westhorp & Marchal, 2021). And evaluation commissioners and other stakeholders have understandable concerns about the timeliness of obtaining actionable findings (Blamey & Mackenzie, 2007; Pedersen & Rieper, 2008).

Developmental evaluation (Patton, 1994, 2011 2021; Patton, McKegg, & Wehipeihana, 2015) is more about what happens along the way. It appeals because it provides a set of principles for wayfinding in situations of complexity and innovation. Realist and developmental approaches do differ, but do they share some waypoints to reliably unpack perplexing problems of practice?

This paper documents a journey towards coherence and rigour in an evaluation where developmental and realist approaches complement each other, and deliver an evidence base for program or policy decision-making that is not only robust but also timely.

We show that, in complex environments, with programs involving change and social innovation, realist developmental evaluation can meet the needs of an often-varied cast of stakeholders, and can do so at pace, at scale, and economically.