Book excerpt: Volume 2: "This book focuses on the application of family psychology to an array of mental and physical health conditions, societal issues, and shared systems such as schools and health care. It provides an overview of theory and research on psychopathology and the family. The book reviews family-focused research and interventions from three exemplars of pediatric illnesses: diabetes, asthma, and cancer. It discusses the existing theoretical perspectives and evidence on the ties between families and youth's organized after-school activities. The book then moves beyond the parent-child dyad to consider the larger family system and sibling influences. It discusses the ways family psychologists can overcome barriers that may discourage them from working with religious leaders and form bridges with religious organizations to promote the well-being of diverse families. The book also highlights several aspects of the vast scientific literature on intimate partner violence. To understand how youth bullying and peer victimization is impacted by familial factors, the book reviews the literature on risk and protective factors associated with bullying involvement, and also highlights a few programs that attempt to prevent bullying through collaboration with families. It explores family advocacy in the field of children's mental health, describing its role in assisting families whose children have serious mental health needs. The populations served by family forensic psychologists (FFPs) are diverse, and the expectations of different court systems often vary distinctly. The book finally presents an overview of various roles that an FFP may fulfill, with a focus on child custody and juvenile dependency cases."--Preface. (PsycINFO Database Record (c) 2018 APA, all rights reserved).