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What Works Clearinghouse, 2015
The What Works Clearinghouse (WWC) Standards Briefs explain the rules the WWC uses to evaluate the quality of studies for practitioners, researchers, and policymakers. This brief explains what baseline equivalence is and why it matters. As part of the WWC review process for certain types of studies, reviewers assess whether the intervention group…
Descriptors: Control Groups, Participant Characteristics, Matched Groups, Research Methodology
Peer reviewed Peer reviewed
Fisher-Giorlando, Marianne – Teaching Sociology, 1992
Describes a technique to make multistage cluster sampling easier for students to understand. Explains that students handle concrete objects that are analogous to the sampling units of a multistage cluster sampling procedure. Suggests that this method is inexpensive, easily organized, and stimulates the tactile senses in the learning process. (DK)
Descriptors: Higher Education, Learning Activities, Matched Groups, Methods Courses
Outdoor Communicator, 1984
At Park Senior High School (Cottage Grove, Minnesota), 46 juniors and seniors planted 384 red pine seedlings in connection with their original research on acid rain, with advice from Dr. Harriet Stubbs, director of the Acid Precipitation Awareness Program (West Saint Paul), which has been developing acid rain teaching materials. (MH)
Descriptors: Air Pollution, Ecology, Educational Experiments, Environmental Education
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Imbens-Bailey, Alison L. – Topics in Language Disorders, 1998
Discusses how clinicians and researchers can critically evaluate information from efficacy studies of language intervention programs. It argues for combining both experimental and nonexperimental approaches and suggests that the use of matching in nonrandomized studies allows for comparison of groups of children participating in an intervention…
Descriptors: Evaluation Research, Experimental Groups, Intervention, Language Impairments
National Centre for Vocational Education Research, Leabrook (Australia). – 2001
Recent Australian research provides a solid body of evidence that training investments can yield very high levels of returns for firms across a range of sectors. It highlights these important factors about returns on investment (ROI): ROI come in many forms; immediate ROI are highest when training is highly focused; measuring ROI is not always…
Descriptors: Adult Education, Corporate Education, Developed Nations, Educational Economics
Miller, Cynthia; Knox, Virginia – 2001
Parents' Fair Share (PFS) was a national demonstration program to help low-income noncustodial parents find more stable and better-paying jobs, pay child support consistently, and become more involved parents. PFS provided the following services: employment and training services; peer support groups; voluntary mediation between parents; and…
Descriptors: Arbitration, Child Support, Comparative Analysis, Conflict Resolution