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Download full textDeVito, Pasquale J.; Long, John V. – 1977
The impact of achievement testing on a Spring-Spring vs. a Fall-Spring basis in evaluation of compensatory education programs is examined. The effects of the summer vacation period and crossing test levels were examined. Significant decreases in achievement test scores were found, at all grade levels, between Spring and Fall test administrations.…
Descriptors: Achievement Gains, Achievement Tests, Compensatory Education, Disadvantaged Youth
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
Yap, Kim Onn – 1979
The accuracy with which regression models estimate treatment effects is dependent upon a number of conditions. The stability of the regression line (a function of sample size and correlation between pretest and posttest) is said to be the most important of these conditions. The utility of regression models is proportional to the size of the…
Descriptors: Correlation, Data Analysis, Educational Testing, Evaluation Methods
Richards, James M., Jr. – 1974
Recent research results strongly suggest that the theoretical problems of change measures have limited practical significance for measuring individual growth, and it is important to determine whether this is also the case for measuring school impact. Accordingly, in this study artifical data were used to assess the correlation between several…
Descriptors: Achievement Gains, Computer Programs, Educational Change, Educational Programs
A Simulation Study Comparing Procedures for Assessing Individual Educational Growth. Report No. 182.
Richards, James M., Jr. – 1974
A computer simulation procedure was developed to reproduce the overall pattern of results obtained in the Educational Testing Service Growth Study. Then simulated data for seven sets of 10,000 to 15,000 cases were analyzed, and findings compared on the basis of correlations between estimated and true growth scores. Findings showed that growth was…
Descriptors: Computers, Educational Assessment, Educational Research, Educational Testing
Horst, Donald P.; Fagan, Barbara M. – 1976
Twelve common errors which can invalidate an otherwise sound evaluation are identified, and ways to avoid them are presented. The hazards are: (1) grade-equivalent scores; (2) inappropriate statistical adjustments with nonequivalent control groups; (3) administering norm-referenced tests at inappropriate times of the school year; (4) inappropriate…
Descriptors: Achievement Gains, Achievement Tests, Educational Testing, Elementary Secondary Education
