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Sørlie, Mari-Anne; Ogden, Terje – International Journal of School & Educational Psychology, 2014
This paper reviews literature on the rationale, challenges, and recommendations for choosing a nonequivalent comparison (NEC) group design when evaluating intervention effects. After reviewing frequently addressed threats to validity, the paper describes recommendations for strengthening the research design and how the recommendations were…
Descriptors: Validity, Research Design, Experiments, Prevention

Isaksen, Arne – Evaluation and Program Planning, 1999
Considers the workings and effects of The Innovation and New Technology Programme in Norway, describing the design of the evaluation and the use of a centrally established control group to assess programs results. Uses results from innovation theory to appraise the aims and working methods of the program and a combination of quantitative and…
Descriptors: Control Groups, Evaluation Methods, Foreign Countries, Geographic Regions