ABSTRACT
This conclusion presents some closing thoughts on the concepts covered in the preceding chapters of this book. The book focuses on single-case designs; an approach to clinical evaluation and research that is suited particularly to investigate individual variability in response to treatment but which, has received insufficient attention. It identifies the single case as a potentially rich source of learning for curious clinicians and endeavours to promote single-case methodology, not only in the development of critical understanding and interpretation of data, but also in the design of clinical interventions. The book introduces the argument for considering single-case methods as a valid research strategy within the context of the dominance of the randomised controlled trial and 'big' data. It discusses the use of standardised measures and highlights the advantages of measures in the study of single cases. The book looks at the concept of validity in measurement and identifies criterion validity as central to the assessment of clinical problems.
