Whereas the first edition focused mainly on ethical reasoning and decision making, this new edition draws more explicitly on all components of James Rest's model of moral/ethical behavior, including moral/ethical sensitivity, moral/ethical decision making, moral/ethical motivation, and the ego strength to follow through on the decision. The book addresses five key principles of ethical decision making and includes updated sections on research, teaching and supervision, and practice. It discusses the relationship of the ethical principles and the model of ethical decision-making to professional ethical codes, while offering discussion questions, case scenarios, and activities to help the reader focus on ethical character and virtue. gives psychologists, students, and trainees the tools they need to analyze their own ethical quandaries and take the right action.