Book excerpt: In a fast-moving world, the necessity of making decisions, and preferably good ones, has become even more difficult. One reason is the variety and number of choices perhaps available which often are not presented or understood. Alternatives are often unclear and complex paths to them confusing and misleading. Thus the process of decision making itself requires analysis on an ongoing basis. Decision making is often made based on cultural factors whereas the best alternative might be quite different. The subject touches ethical aspects as well as psychological considerations. This book presents important research on the psychology of decision making related to law and law enforcement, health care and science.