As American society becomes increasingly diverse, social workers must use a variety of human behavior frameworks to understand their clientas culturally complex concerns. This text applies specific human behavior theories to diversity practice. They show how human behavior theory can be employed in interventions in the life problems of diverse client populations at the individual, group, social network, and societal levels. Several groups are examined. They include: minority groups; ethnic groups; women; older adults; members of certain social classes affected by economic and educational (dis)advantage, especially those living in poverty; people with developmental disabilities, people of varying sexual and gender orientations, and religious groups. Case studies that illustrate social work practice in the area are highlighted. The case studies include Social Work Practice within a Diversity Framework; The Social Work Interview; Symbolic Interactionism: Social Work Assessment, Meaning, and Language; Eriksonas Eight Stages of Development; Role Theory and Social Work Practice; A Constructionist Approach; Risk, Resilience and Resettlement; Addressing Diverse Family Forms; Small Group Theory; Natural Social Networks; Power Factors in Social Work Practice. This volume will be a fundament resource for practitioners and an essential tool for training.