The regression-discontinuity design involving a treatment interaction effect (TIE), pretest-posttest functional form specification, and choice of point-of-estimation of the TIE are examined. Formulas for controlling the magnitude of TIE in simulations can be used for simulating the randomized experimental case where estimation is not at the…

Describes a computer-based instructional system called Stat Lady and reports the results of an evaluation study of undergraduates that tested the efficacy of learning probability from this program compared to a traditional lecture and a no-treatment control group. Aptitude treatment interaction is also investigated. (Author/LRW)

Inagaki and Hatano (2002) have argued that young children initially understand biological phenomena in terms of vitalism, a mode of construal in which "life" or "life-force" is the central causal-explanatory concept. This study investigated the development of vitalistic reasoning in young children's concepts of life, the human body and death.…

The present study reports results of an experiment with two groups of sophomore students majoring in translation. The control group was taught British culture using in-class instruction only, and the experimental group was taught using a combination of online and in-class instruction. Experimental students used the online course from home as the…

The purpose of this study was to investigate the effects of various translation methods used in imported instructional video programs on Taiwan elementary school students' visual and verbal memory. Following pretesting, 128 fourth grade students from an urban public elementary school in northern Taiwan participated. The students in 4 experimental…

Relative effects on adult learners who received experimenter-provided elaborations or who generated personal elaborations, using strategies taught by means of detached versus embedded training, were examined in 80 employees in a professional-development course at a large corporation. Subjects were assigned to a control group, a group receiving…

The Cooperative Extension Service has been a key partner in the design, implementation and evaluation of leadership development programs. To evaluate the effectiveness of their training and the effects of response shift bias on outcomes using a self-report measure, one hundred forty-seven County Extension Agents participated in this leadership…

Violence is increasingly present in Quebec schools. Our position is that we should invest in "primary" prevention of violence by helping preschool children develop cognitive competencies. One of the aspects of cognitive development explored in this text regards children's Social Representations (SR) of violence. Indeed, a number of…

In this paper the effect of interaction between learners of English as a second language during a dictogloss task on the acquisition of the passive form is investigated. Subjects were 34 Dutch high school students in their fifth year of English. The experimental group was given two dictogloss tasks, which consisted in the reconstruction in small…

The focus of this study was on comparing three groups of Algebra I 9th-year students: one group using linked representation software, the second group using similar software but with semi-linked representations, and the control group in order to examine the effects on students' understanding of linear relationships. Data collection methods…

A survey by the Kenya National Examination Council (KNEC) revealed that students' academic performance and interest in secondary school biology has been generally poor. This has been attributed to the current methods of instruction and the lack of instructional resources amenable to the study and proper understanding of such complex areas as cell…

The evaluation design, which prescribes when and from whom to gather data, is described as significant because it can lend credibility to evaluation results. The objectives of this booklet are to aid the evaluator in: choosing a design; putting it into operation; and analyzing and reporting the data. Examples include both formative and summative…

This study investigated the effect of encouragement, inspection, and training on the effectiveness of supervisors' developmental activities with their subordinates. Treatment groups were established on each variable. A specially developed questionnaire was administered, before introduction of the study variables and again six months afterward, to…

This study highlights two groups of students enrolled in a college mathematics of finance course using same textbook and instructor. Experimental group used menu-driven symbolic calculators, whereas control group used standard scientific calculators. Significant increases in favor of experimental group were found both with respect to students'…

The grade improvement program "Where There's a Will There's an A" was evaluated with 36 experimental and 37 control group undergraduates. The approach and content of the evaluated materials appear inconsistent with the body of research on academic improvement, and study results do not indicate any improved achievement. (SLD)