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ERIC Number: EJ834163
Record Type: Journal
Publication Date: 2009-Apr
Pages: 11
Abstractor: As Provided
Reference Count: 13
ISBN: N/A
ISSN: ISSN-0895-7347
A Note on Presenting What Predictive Validity Numbers Mean
Bridgeman, Brent; Burton, Nancy; Cline, Frederick
Applied Measurement in Education, v22 n2 p109-119 Apr 2009
Descriptions of validity results based solely on correlation coefficients or percent of the variance accounted for are not merely difficult to interpret, they are likely to be misinterpreted. Predictors that apparently account for a small percent of the variance may actually be highly important from a practical perspective. This study combined two existing data sets to demonstrate alternative methods of showing the value of the Graduate Record Examination General Test (GRE) as an indicator of first-year graduate grades. The combined data sets contained 4,451 students in six graduate fields: biology, chemistry, education, English, experimental psychology, and clinical psychology. Students within a department were divided into quartiles based on GRE scores and on undergraduate grade point average (UGPA), and the percent of students in the top and bottom quartiles earning a 3.8 or higher GPA in their first year of graduate study was noted. Even after controlling for undergraduate GPA quartiles (i.e., looking at GRE quartile differences within GPA quartiles), substantial differences related to GRE quartile remained. (Contains 1 table and 3 figures.)
Routledge. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals
Publication Type: Journal Articles; Reports - Evaluative
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Graduate Record Examinations