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Pretest-posttest designs and measurement of change
Dimiter M Dimitrov1, Phillip D Rumrill
1507 White Hall, College of Education, Kent State University, Kent, OH 44242-0001, USA. ddimitro@kent.edu
Work (Reading, Mass.)
|April 3, 2003
Abstract:
The article examines issues involved in comparing groups and measuring change with pretest and posttest data. Different pretest-posttest designs are presented in a manner that can help rehabilitation professionals to better understand and determine effects resulting from selected interventions. The reliability of gain scores in pretest-posttest measurement is also discussed in the context of rehabilitation research and practice.