The legal system requires mental health professionals to provide research summaries to support their evaluations in child custody cases. Contributions from leading developmental researchers, legal professionals, and clinicians describe how scientific evidence is properly used in court. Timely and current, this book helps evaluators access the best information to fulfill their obligations to their clients and the court. The Second Edition adds chapters on family observation, parental alienation, and sexual abuse. Forensic psychologists, family lawyers, and judges will be equipped with the most current information to aid in custody decisions.