Descriptions of some criminological perspectives in the United States include clinical criminology, the multiple- factor approach to criminology, the general-theory-builders' position, and the interdisciplinary approach. Also considered are the perspectives of conservative and liberal criminology, social control theories, labeling theories, and radical criminology. A section on "specific trends" addresses victimization surveys and the arguments for the biological and environmental factors in criminal behavior. Trends and ideals in the administration of criminal justice are discussed from cross-cultural perspectives, with attention to a comparison of the American and German justice systems and other criminal law reform movements. The trend analysis concludes that no one theory explains all deviant behaviors. Combinations of theories are most likely to fit the complexity of factors in criminal behavior. Given this complexity, interdisciplinary research is appropriate.