Accessed 296,768 times on https://pareonline.net from November 13, 1999 to December 31, 2019. For downloads from January 1, 2020 forward, please click on the PlumX Metrics link to the right.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Gribbons, Barry and Herman, Joan
"True and Quasi-Experimental Designs,"
Practical Assessment, Research, and Evaluation: Vol. 5
, Article 14.
Available at: https://scholarworks.umass.edu/pare/vol5/iss1/14