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Data Analysis Strategies for Quasi-Experimental Studies Where Differential Group and Individual Growth Rates Are Assumed. Research Series No. 13.
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Olejnik, Stephen – 1978
The measurement of change in quasi-experimental educational research was discussed. Problems related to measuring change exist to varying degrees in all research designs; these issues are less troublesome in experimental studies because the investigator can manipulate the interest variables and observe their effects on other variables. Measuring…
Descriptors: Achievement Gains, Comparative Analysis, Educational Research, Educational Testing