This text investigates the foundational methodologies required to conduct rigorous empirical research within the fields of criminal justice and criminology. Frank E. Hagan, a recognized scholar in the field, distills complex academic concepts into an accessible framework for students. By focusing on the core principles of qualitative and quantitative inquiry, the author provides a streamlined guide that emphasizes practical application over advanced statistical theory.

The subject matter points to a foundational, pedagogical text designed for undergraduate students seeking a clear introduction to research design. The framing suggests a highly structured, accessible resource that prioritizes clarity and essential methodology for those entering the field of criminal justice.