This book seeks to address these issues, providing a timely review of the current literature, and presents findings of a recent national evaluation of ISSP. Emerging lessons for future penal policy are presented, and set within a wider theoretical context. The book concludes by stressing the need for greater realism and further evidential support if such programmes are to gain long-term credibility, and also to consider the appropriateness of differing forms of targeting as well as the emphasis placed on the various methods of surveillance.