NotesFAQContact Us
Collection
Advanced
Search Tips
Showing all 7 results Save | Export
The Class as an Experimental Unit.
Peer reviewed Peer reviewed
Stoker, Howard W.; And Others – Evaluation Review, 1981
The use of analysis of variance was examined under the assumption that the treatment had been randomly assigned to students, when in fact, the class had been the unit. Data support the idea that if one can randomly assign treatments to intact classes, consideration should certainly be given to doing so. (Author/GK)
Descriptors: Analysis of Variance, Control Groups, Experimental Groups, Mathematical Models
Multiple Group Time-Series Design: An Analysis of Data.
Peer reviewed Peer reviewed
Algina, James; Olejnik, Stephen F. – Evaluation Review, 1982
A method is presented for analyzing data collected in a multiple group time-series design. This consists of testing linear hypotheses about the experimental and control group-means. Both a multivariate and a univariate procedure are described. (Author/GK)
Descriptors: Control Groups, Data Analysis, Evaluation Methods, Experimental Groups
Research Designs for Data Banks.
Peer reviewed Peer reviewed
Roos, Leslie L., Jr.; Nicol, J. Patrick – Evaluation Review, 1981
Criteria for suitable research designs for use with large databases are suggested and analyzed. The advantages and disadvantages of several types of quasi-experimental designs are compared. Examples are taken from the authors' research with data from the Manitoba Health Services Commission. (Author/AL)
Descriptors: Comparative Analysis, Control Groups, Databases, Experimental Groups
Juvenile Diversion: An Experimental Analysis of Effectiveness.
Peer reviewed Peer reviewed
Severy, Lawrence J.; Whitaker, J. Michael – Evaluation Review, 1982
The desirability of combining tests of theory with evaluations of treatment modalities is argued in an investigation of the effectiveness of a juvenile diversion program. Using a true experimental design (with randomization), recidivism analyses dependent on court record data failed to demonstrate the relative superiority of any of three treatment…
Descriptors: Delinquent Rehabilitation, Experimental Groups, Hypothesis Testing, Measurement Techniques
The Comparison Group Problem in Bereavement Studies and the Retrospective Pretest.
Peer reviewed Peer reviewed
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
When Total Randomization Is Impossible: Nested Randomized Assignment.
Peer reviewed Peer reviewed
Moberg, D. Paul; And Others – Evaluation Review, 1993
Difficulties experienced in implementing a randomized design in a school-based adolescent health promotion program are explained, and a solution using a randomized control group design nested within two treatment options is proposed. The Health for Life project involved 21 middle schools in Wisconsin. (SLD)
Descriptors: Adolescents, Control Groups, Experimental Groups, Health Promotion
The Fallibility of Comparison Groups.
Peer reviewed Peer reviewed
Grossman, Jean; Tierney, Joseph P. – Evaluation Review, 1993
Evidence is presented that strengthens the argument against comparison group research strategies. Results from a study of youth attitudes related to the California Conservation Corps involving 528 participants and 668 comparisons indicate that the comparison group may not adequately represent the nontreatment state. (SLD)
Descriptors: Attitudes, Comparative Analysis, Control Groups, Experimental Groups