Abstract: Research is an increasing priority for workers throughout the mental health sector, and therapeutic communities are no exception. Those working in TCs increasingly have to justify the success and efficiency of their methods to outside bodies, and the prime means of doing so is through research. This volume collects a wide range of papers by experienced contributors discussing all aspects of TC research. They consider questions of which methods are most appropriate in the unique environment of TCs, how research studies affect the TC environment, as well as practical and ethical questions. The book also includes accounts of several research studies undertaken at, among other places, the Cassel Hospital. Taken as a whole, the book will be an invaluable resource for anyone involved in researching therapeutic communities – whether undertaking a study, attempting to anticipate its clinical impact, or seeking to understand the kinds of results which TC research produces.