Ethical concerns have become a major focus in psychology. Speculate on why the American Psychological Association (APA) has formal, written ethical principles. Cant' psychologists simply be trusted to "do right"? Why are there difference principles for researching using humans and animals? Should there be? How are the ethical responsibilites of scienteist similar to those of laypersons? How are they different? The goals of this discussion are to identify the purpose of and need for thical guidelines in research and to generalize those notions to everyday life.