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Medical Research Council guidelines recognise the need to optimise complex interventions prior to full trial through greater understanding of underlying theory and formative process evaluation, yet there are few examples. A realist approach to formative process evaluation makes a unique contribution through a focus on theory formalisation and abstraction. The success of an intervention is dependent on the extent to which it gels or jars with existing provision and can be successfully transferred to new contexts. Interventions with underlying programme theory about how they work, for whom, and under which circumstances will be better able to adapt to work with (rather than against) different services, individuals, and settings. In this methodological article, we describe and illustrate how a realist approach to formative process evaluation develops contextualised intervention theory that can underpin more adaptable and scalable interventions. We discuss challenges and benefits of this approach.

Medical Research Council guidelines recognise the need to optimise complex interventions prior to full trial through greater understanding of underlying theory and formative process evaluation, yet there are few examples. A realist approach to formative process evaluation makes a unique contribution through a focus on theory formalisation and abstraction. The success of an intervention is dependent on the extent to which it gels or jars with existing provision and can be successfully transferred to new contexts. Interventions with underlying programme theory about how they work, for whom, and under which circumstances will be better able to adapt to work with (rather than against) different services, individuals, and settings.In this methodological article, we describe and illustrate how a realist approach to formative process evaluation develops contextualised intervention theory that can underpin more adaptable and scalable interventions. We discuss challenges and benefits of this approach.

Judgemental rationality is infrequently referenced within discussions of Realist Evaluations. Judgemental rationality refers to researchers' capacity to assess which, potential, meanings provide the most credible explanations. In evaluation work, rationale for analysis is provided, though rarely do we see how an evaluator made judgements between competing theories, and which theories were discarded and why. We provide a worked example of the application of judgemental rationality. The Engager intervention offered support to prison leavers with common mental health problems. The data for 24, purposively sampled, participants from the intervention arm of the trial were integrated. Bhaskar's DREIC, a five-step analytical procedure, was used to transfactually theorise and interrogate the inferences made within, and across, cases. The findings demonstrated that the intervention was more effective when practitioners developed an in-depth understanding of the participant. We recommend that intervention developers look for ways to enhance therapeutic competencies and judgemental rationality in practitioner teams.

Working futures? looks at the current effectiveness and future scope for enabling policy in the field of disability and employment. By addressing the current strengths and weaknesses of disability and employment policy, the book asks Is the dichotomy of 'work for those who can and support for those who cannot' appropriate to the lives of disabled people? Does current and recent policy reduce or reinforce barriers to paid employment? What lessons from other welfare regimes can we draw on to further disabled people's working futures? The book is original in bringing together a wide range of policy insights to bear on the question of disabled people's working futures. It includes analyses of recent policy initiatives as diverse as the Disability Discrimination Act 1995, Draft Disability Bill, the benefits system, New Deal for Disabled People, job retention policy, comparative disability policy, the role of the voluntary sector and 'new policies for a new workplace'. Contributions from academics, NGOs, the OECD and the disabled peoples' movement bring multiple theoretical, professional and user perspectives to the debates at the heart of the book