This article presents a method to evaluate pretest effects on posttest scores in the absence of an un-pretested control group using published results of pretesting effects due to Willson and Putnam. Confidence intervals around the expected theoretical gain due to pretesting are computed, and observed gains or differential gains are compared with…

The present authors argued that the covariance analysis is completely valid even if there is a true main effect for pretesting and a second point of the paper involved a recommendation for data analysis if the interaction from ANOVA was significant. (Editor/RK)

This publication is primarily designed for educational practitioners who possess little or no training in conducting mail surveys or have not kept current on the present state of the art of survey methods and techniques. It is also intended to be a checking and comparing aid to ensure that important research considerations are taken into account.…

The study compares the content retention by students who are self-paced with content retention by students whose pacing is modified by instructors. The subjects included 148 students enrolled in an introductory college level child development course. One group of 74 students was randomly assigned to a self-paced section and another group of 74…

When two groups, initially dissimilar, undergo different treatments, can subsequent differences be partitioned in such a way that the difference between the two treatments is unbiased? This is the central problem of this paper, and it is confronted by the examination of two levels of information using a Follow Through Evaluation. The first…

A project to upgrade knowledge and skills of junior high school students in American history was conducted in four cities and counties in Virginia during 1977-78. The hypothesis was that students who received feedback from teachers regarding performance on an American history pre-test would perform better on a subsequent American history test.…