Experimental and Quasi-Experimental Designs for Research

This survey originally appeared in N. L. Gage (editor)  handbook of Research on Teaching published by Rand McNally Company in 1963, under the longer title "Experimental and Quasi-Experimental Designs for Research on Teaching." As a result, the introductory pages and many of the illustrations come from educational research. But as a study of the references will indicate, the survey draws from the social science in general, and the methodological recommendations are correspondingly broadly appropriate.
NOTE: Reprinted from Handbook of Research on Teaching