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ERIC Number: ED169073
Record Type: RIE
Publication Date: 1978
Pages: 10
Abstractor: N/A
Reference Count: 0
Multiple Choice Converted to True-False: Comparative Reliabilities and Validities.
Green, Kathy
Forty three-option multiple choice (MC) statements on a midterm examination were converted to 120 true-false (TF) statements, identical in content. Test forms (MC and TF) were randomly administered to 50 undergraduates, to investigate the validity and internal consistency reliability of the two forms. A Kuder-Richardson formula 20 reliability was computed for each form. Reliability of the MC form was then adjusted with the Spearman-Brown formula to equate testing time, since the MC form took three-fourths as much time to complete as the TF form. Adjusted reliability coefficients of the TF and MC forms were .80 and .73, respectively. To compare validity, a Pearson product moment correlation was computed between test score and grade point average; validity coefficients were .49 (TF) and .52 (MC). Results support the use of TF teacher made tests as alternatives to MC tests with no loss in reliability or validity. However, as previous studies have shown, these results are not obtained when MC items are revised and the range of the TF form is restricted. (CP)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Teacher Developed Tests
Note: Paper presented at the Annual Meeting of the Western Psychological Association (San Francisco, California, 1978)