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ERIC Number: ED073411
Record Type: RIE
Publication Date: 1972-Nov
Reference Count: 0
Treatment by Age Interactions: The Problem and a Solution. Theoretical Paper No. 41.
Levin, Joel R.
This report presents the problem and a solution to the treatment of students by age interactions. It considers the plight of an educational researcher who wishes to demonstrate that a particular treatment effect changes from age to age. In analysis of variance language, he is seeking a treatment by age interaction. The report presents a rationale for considering treatment by age interactions in a relative rather than in an absolute sense. The problem considered is, "How can the interaction question be answered when treatment differences at one age level are based on a different variability from those at another age level?" An appropriate data transformation is derived that enables a researcher to interpret such interactions statistically. (Author/WS)
Publication Type: N/A
Education Level: N/A
Sponsor: Office of Education (DHEW), Washington, DC. Research and Development Centers Branch.
Authoring Institution: Wisconsin Univ., Madison. Research and Development Center for Cognitive Learning.