Explore human development and behavior across the lifespan with Zastrow and Kirst-Ashman’s UNDERSTANDING HUMAN BEHAVIOR AND THE SOCIAL ENVIRONMENT, 9E. This essential guide for social work students and professionals examines biological, psychological, and social influences at each developmental stage, emphasizing strengths and empowerment. The International Edition thoroughly integrates the latest CSWE EPAS core competencies, making it an indispensable resource for contemporary social work practice. Understand the intricate interplay between individuals, families, organizations, and communities through a comprehensive chronological approach. Perfect for courses on human behavior in the social environment, this book provides a robust foundation for effective social work intervention.