on different ways of understanding the role of theory and on the relationship between theory and method; a subsequent introductory chapter addresses the topic of qualitative and quantitative methods and epistemology. The book will be of interest to anyone who is about to embark on a public health and other research project or who is writing a thesis or a paper, and who is looking for help in the choice of methods. New researchers, Ph.D. students and undergraduate students of medicine, public health, nursing, occupational therapy and physiotherapy and students in other areas such as sociology, pedagogy, and anthropology, as well as students taking their master's degrees will benefit from this book.