Charles H. Zastrow, LCSW, Ph.D., is Professor Emeritus in Social Work at the University of Wisconsin- Whitewater. He is the author or co-author of Introduction to Social Work and Social Welfare, Social Work with Groups, Social Problems: Issues and Solutions, and Understanding Human Behavior and the Social Environment. In 2018, the National Association of Social Workers awarded him the distinction of being a "Social Work Pioneer." Sarah Hessenauer, LCSW, Ph.D., is a professor in the Social Work department at Mount Mary University. She has worked as a practitioner and administrator in a variety of mental health and addictions agencies. She is coauthor of Social Work with Groups and Understanding Human Behavior and the Social Environment.
