ERIC Number: EJ1031270
Record Type: Journal
Publication Date: 2014-Jun
Pages: 8
Abstractor: As Provided
ISBN: N/A
ISSN: EISSN-1531-7714
EISSN: N/A
Quasi-Experiments in Schools: The Case for Historical Cohort Control Groups
Walser, Tamara M.
Practical Assessment, Research & Evaluation, v19 n6 Jun 2014
There is increased emphasis on using experimental and quasi-experimental methods to evaluate educational programs; however, educational evaluators and school leaders are often faced with challenges when implementing such designs in educational settings. Use of a historical cohort control group design provides a viable option for conducting quasi-experiments in school-based outcome evaluation. A cohort is a successive group that goes through some experience together, such as a grade level or a training program. A historical cohort comparison group is a cohort group selected from pre-treatment archival data and matched to a subsequent cohort currently receiving a treatment. Although prone to the same threats to study validity as any quasi-experiment, issues related to selection, history, and maturation can be particularly challenging. However, use of a historical cohort control group can reduce noncomparability of treatment and control conditions through local, focal matching. In addition, a historical cohort control group design can alleviate concerns about denying program access to students in order to form a control group, minimize resource requirements and disruption to school routines, and make use of archival data schools and school districts collect and find meaningful.
Descriptors: Quasiexperimental Design, Cohort Analysis, Control Groups, Educational Assessment, Comparative Analysis, Educational Legislation, Validity, Construct Validity
Center for Educational Assessment. 813 North Pleasant Street, Amherst, MA 01002. e-mail: pare@umass.edu; Tel: 413-577-2180; Web site: https://scholarworks.umass.edu/pare
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Laws, Policies, & Programs: No Child Left Behind Act 2001
Grant or Contract Numbers: N/A