This book presents original research outlining the key elements in responding to parental misuse of drugs and alcohol. * Offers a definition of misuse and addiction and the factors that influence the nature of misuse or addiction * Reviews extensively the nature and impact of parental substance misuse on children and families using the latest evidence * Explores how research and theories might help inform professionals or non-professionals assessing families affected by parents who misuse drugs or alcohol * Provides an in-depth discussion of Motivational Interviewing, including a critical discussion of the challenges and limitations involved in using it in child and family settings * Considers the wider implications of the findings for practice and policy and argues that these responses can be used across the field of work with vulnerable children and their families.