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Mourad El Karkri; Antonio Quesada; Marta Romero-Ariza – Review of Education, 2025
Until now, the conventional approach using two distinct groups, experimental and control, continues to dominate research, especially education research. Researchers, particularly those who are active in this domain, readily recognise this pattern when surveying literature. This article explores the use of the Solomon four-group design as a…
Descriptors: Educational Research, Research Methodology, Experimental Groups, Control Groups
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Khemka, Ishita; Hickson, Linda; Mallory, Sarah B. – Journal of Autism and Developmental Disorders, 2016
This study was designed to assess the impact of a decision-making curriculum (PEER-DM) on the social peer relationship knowledge and self-protective decision-making skills of adolescents with disabilities in hypothetical situations involving negative peer pressure. A randomized design was used to assign students with disabilities from…
Descriptors: Autism, Pervasive Developmental Disorders, Decision Making Skills, Peer Relationship
Bunker, Kerry A.; Cohen, Stephen L. – Training and Development Journal, 1978
After offering some possible explanations for the existing inadequacies in evaluating organizational training programs, the authors discuss several evaluation issues, particularly internal validity. Methods for overcoming evaluation inadequacies and the implications for better controlled evaluation designs are also covered. (EM)
Descriptors: Control Groups, Evaluation Criteria, Evaluation Methods, On the Job Training
Raffeld, Paul; Reynolds, William M. – 1977
The pretest-posttest design referred to as Design 2 by Campbell and Stanley (1963) is commonly used in educational research and evaluation. The tenability of the assumption of a zero population difference commonly used with this design is questioned. A nonzero population estimate based on the mean difference observed in test-retest reliability…
Descriptors: Control Groups, Correlation, Experimental Groups, Hypothesis Testing
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Hoogstraten, Joh. – Applied Psychological Measurement, 1979
The biasing effects of a pretest on subsequent post-test results were investigated in two experimental studies. In general, the results argue for using designs without pretests. (Author/JKS)
Descriptors: Control Groups, Error Patterns, Evaluation Methods, Higher Education
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Toedter, Lori J.; And Others – Evaluation Review, 1990
The problem of the appropriate comparison group for bereavement studies is discussed. The use of the retrospective pretest design is illustrated through a longitudinal study of bereavement outcome following pregnancy loss, involving 138 bereaved women and a comparison group of 215 currently pregnant women. (SLD)
Descriptors: Adults, Bereavement, Comparative Analysis, Control Groups
Fitz-Gibbon, Carol Taylor; Morris, Lynn Lyons – 1978
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…
Descriptors: Analysis of Variance, Control Groups, Educational Research, Evaluation Methods
Hubert, John A. – 1978
The Elementary and Secondary Education Act Title I Evaluation and Reporting System is a method for giving a federally funded project in reading or math an overall score on its cognitive effectiveness. This System introduced the Normal Curve Equivalent (NCE) as an aid in aggregating Title I program scores across states and nationwide regardless of…
Descriptors: Achievement Gains, Achievement Tests, Compensatory Education, Control Groups
Wolverton, John B., Jr. – 1976
A quasi-experimental design was employed to determine the effects of a workshop, designed to familiarize teachers and counselors with a technical institute in the North Carolina Community College System, on knowledge and attitudes related to the programs and practices of the institution. Subjects were assigned to experimental and control groups by…
Descriptors: Analysis of Variance, Attitude Change, Attitude Measures, Attitudes
Faddis, Bonnie J.; And Others – 1979
Ninth grade Elementary Secondary Education Act (ESEA) Title I evaluation results in reading and English-writing projects were compared, using the RMC Model A with local empirical norms, Model A with national interpolated norms, and Model B. The Comprehensive Tests of Basic Skills (CTBS)--Total Reading and Total Language subtests--were administered…
Descriptors: Achievement Tests, Comparative Analysis, Compensatory Education, Control Groups