This empirically based book provides conceptual knowledge and practical advice to enable clinicians to implement evidence-based methods drawn from learning theory for managing the catastrophic effects of challenging behaviour as an enduring outcome of acquired brain injury (ABI).Based on a conceptual framework of neurobehavioural disability, the book takes a holistic case formulation approach, incorporating functional assessment procedures arising from the operant learning tradition that underpins the design of treatment interventions.It bridges the knowledge gap in uniquely providing a single resource to enable practitioners to implement evidence-based methods to better manage ABI behaviour disorders. The authors, who are leading experts in the field, have described a model of intervention based on a functional analytic approach to understanding behaviour within an operant learning framework.The chapters provide a step-by-step approach to assessment, formulation, intervention and eval