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NCJ Number: 198650 Find in a Library
Title: Maryland Scientific Methods Scale (From Evidence-Based Crime Prevention, P 13-21, 2002, Lawrence W. Sherman, David P. Farrington, et al, eds., -- See NCJ–198648)
Author(s): David P. Farrington; Denise C. Gottfredson; Lawrence W. Sherman; Brandon C. Welsh
Date Published: 2002
Page Count: 9
Sponsoring Agency: Routledge
New York, NY 10017
Sale Source: Routledge
711 Third Ave.
New York, NY 10017
United States of America
Type: Report (Study/Research)
Format: Book (Hardbound)
Language: English
Country: United States of America
Annotation: This chapter describes the aim of the Maryland Scientific Methods Scale in communicating to scholars, policymakers, and practitioners that the effects of criminological interventions differ in methodological quality.
Abstract: After explaining that the Maryland Scientific Methods Scale (SMS) is largely based on a classic book by Cook and Campbell, the authors describe the testing of causal hypotheses by focusing on the issues of statistical conclusions and internal, construct, and external validity. Arguing that there have been many previous studies that have attempted to devise scales of methodological quality, the authors assert that the SMS scale was devised as a simple scale to measure internal validity. Stating that the SMS scale easily communicates research findings to scholars, policymakers, and practitioners, the authors assess the strengths and weaknesses of the SMS, arguing that one problem with the scale is that it is designed to apply equally to all experimental units. Contending that the 5-point SMS scale of internal validity might be improved by researchers creating larger units of analysis and recognizing links in the causal chain between effects of such variables as X and Y, the authors caution that the very changes that might improve the quality of the results generated by the SMS may also compromise the simplicity of this scale. References
Main Term(s): Crime prevention measures; Crime prevention planning
Index Term(s): Evaluation; Evaluation measures; Evaluation techniques; Maryland; Testing and measurement
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