Introduces the articles of this special issue focusing on randomized field trials in criminology. In spite of the overall lack of randomized field trials in criminology, some agencies and individuals are able to mount an impressive number of field trials, and these articles focus on their experiences. (SLD)

Responds to Eisner's discussion of the nature of research and the place of qualitative research. Advocates increased emphasis on the true experiment in educational research to provide evidence of the usefulness of educational practices. (SLD)

Explores the nature of educational research, replying to Knapp's comments on the role of qualitative research. Suggests that the "true" experiment is very hard to conduct in educational research and discusses what validity means in the educational research context. (SLD)

The Multiple Option Observation System for Experimental Studies (MOOSES) is a flexible data collection and analysis package for applied behavioral research that addresses the needs of researchers interested in live coding of observational data. MOOSES allows the researcher to design a coding system for a particular research question. General types…