Human Behavior Theory for Social Work Practice offers an in-depth exploration of human behavior theory and helps students connect each theory to social work practice. Instead of following the traditional lifespan approach, the book introduces key theories and shows how they apply to case examples across different life stages. With insights from years in social work practice, Terry Koenig, John Thompson, and Rick Spano share case examples that encourage students to engage deeply with ideas and respond to challenges with clarity and care. The new Second Edition addresses all three levels of practice, with a strong emphasis on neuroscience and ethics, and provides a comprehensive foundation into the history of the profession, equipping students to think critically, act ethically, and grow into reflective practitioners.