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ERIC Number: ED159182
Record Type: RIE
Publication Date: 1975
Pages: 16
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
An Index for Determining the Importance of a Region of Significance and Some Applications to Published ATI Research.
Borich, Gary D.; And Others
The homogeneity of group regressions test and regions of significance test are two procedures which are frequently recommended for testing and aptitude-treatment or trait-treatment interaction (ATI) hypothesis. The former is used to determine if treatment group regressions are nonparallel while the latter is used to determine the range of aptitude values for which the heterogeneous group regessions are significantly different. While the above procedures have become somewhat commonplace among ATI researchers, quantitative indices which can be used to determine the practical importance of a region of significance are conspicuously absent from any discussion of ATI methodology. The purpose of this paper is to outline a quantitative procedure for determining the practical importance of a region of significance and to illustrate by reanalysing data from published ATI research studies that a failure to use the procedure could lead to trivial and/or erroneous research conclusions. (Author/CTM)
Publication Type: Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: N/A