Refinement in Assessment Validation: Technicalities of Dealing with Low Correlations and Instructor Grading Variation.
Refinement in Assessment Validation: Technicalities of Dealing with Low Correlations and Instructor Grading Variation.
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评估验证的细化:处理低相关性和教师评分变化的技术细节。
DOI:
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发表时间:
1995
期刊:
影响因子:
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通讯作者:
J. Barr
中科院分区:
文献类型:
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作者:
Richard A. Rasor;J. Barr
MF01/PC01 Plus Postage. *College Students; *Correlation; Educational Assessment; *Grade Point Average; *Grading; Higher Education; *Scores; Student Evaluation; Test Results; *Validity Issues and problems in assessment research are explored, with suggestions to help establish an acceptable correlation between student assessment scores and final grades. Topics include assessing instructor grading variation, instructor grade point average (GPA), success rates, and lack of linearity in grade scales. Solutions to these problems are offered in the form of a new four-point research grading scale and a new "contextual" student GPA based on cumulative grade average with the final grade in the target course removed from the calculation. The contextual GPA was usee to equate student "skill" levels in course selections when identifying the degree of instructor grading variation. The techniques were applied to a sample of 6,077 students covering performance data in 26 courses. The magnitude of the resulting correlations suggests giving much greater emphasis to student cumulative college GPA as a multiple measure when establishing entrance "skill" levels deemed necessary for success in general courses having no specific course prerequisite. Practical suggestions are included for identifying the true correlation between assessment test scores and grades given the problem of instructor grading variation. (Contains three tables and six figures.) (Author/SLD) *********************************************************************** * Reproductions supplied by EDRS are the best that can be made from the original document. *********************************************************************** U.S. DEPAITTNENT OF EDUCATION Othc of Educational Research and Improvement ED ONAL RESOURCES INFORMATION CENTER (ERIC) This document has been risproduCtsd as received from the parson or orgenization originating d 0 Minor changes have been made to improve ceProductron Quairty Pants of v.ew or opirhons stated m this document do not necessarily represent official OERI position or policy 'PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY tleAmo TO THE EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC).REFINEMENT IN ASSESSMENT VALIDATION: TECHNICALITIES OF DEALING WITH LOW CORRELATIONS AND INSTRUCTOR GRADING VARIATION