One Group Pretest Posttest
Synonyms: Before and After Design; One Group Before and After Design
A study design in which a sample is observed twice, one prior to (pre), and once after (post) an intervention or experiment.
Marczyk, G.R. et al. 2005. Essentials of Research Design and Methodology, Hoboken, NJ: John Wiley & Sons.
Campbell, D. and J. Stanley. 1963. Experimental and Quasi-Experimental Designs for Research, Boston, MA: Houghton Mifflin Company.
Shi, L. 1997. Health Service Research Methods, Albany, NY: Delmar Publishers.
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