This practical book helps readers provide effective mental, emotional, and behavioral health services to clients across the continuum of care, from health promotion through long-term treatment and remediation. Anchoring each chapter within a life stage—from childhood through older adulthood—the text identifies the nature and origin of various psychological issues and emphasizes the importance of anticipating and responding early to concerns that arise for large portions of the population. The Second Edition features new chapters and expanded coverage of important topics, such as sociocultural contextual factors and interprofessional health perspectives.