Research Methods in Criminal Justice and Criminology is a core text for criminology and criminal justice research methods courses. It strives to offer a general foundation of knowledge that transcends particular topics or subject areas, allowing students to apply research methods and concepts to a multitude of scenarios. Even though the textbook has been written primarily for criminal justice and criminology majors, there is an underlying recognition that research methods and findings are common among all of the social sciences. This text has been designed to be user-friendly, even when dealing with some fairly complex statistical and theoretical concepts. The most critical points are clearly stated and illustrated with examples chosen to be interesting in their own right.