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網路化檔案評量環境下教學者評、學生自評與同儕 互評之信效度比較 Comparisons of Reliability and Validity among Instructor Assessment, Student Self-Assessment and Peer-Assessment under Web-Based Portfolio Assessment Environment

Author(s): Chi-Cheng Chang | Ming-Fun Wu

Journal: Journal of Educational Media & Library Sciences
ISSN 1013-090X

Volume: 49;
Issue: 1;
Start page: 135;
Date: 2011;
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本研究比較網路化檔案評量環境下教學者評、學生自評與同儕互評的信效度。研究樣本為某高職二年級修習「計算機應用」課程的七十二位學生。學生使用網路化檔案評量系統進行檔案的製作、觀摩、自評與同儕互評,教師透過系統檢視學生的檔案並評量其學習表現。在三種評量結果之間差異上,教學者評、學生自評、同儕互評三種評量結果有顯著差異,其中教學者評量最為嚴格、其次為學生自評,同儕互評最為寬鬆。在三種評量結果之間一致性上,僅自評與教師評之間具一致性。自評與同儕互評之間、同儕互評與教學者評之間,都不具一致性。在三種評量結果與測驗成績一致性上,教學者評分結果與測驗成績具高度一致性,學生自評與測驗成績亦具高度一致性;而同儕互評結果與測驗成績一致性低。This study compares the reliable and validity among instructor assessment, student self-assessment and peer-assessment under the Web-based portfolio assessment environment. The research samples consist of 72 students who take “Computer Application” course of the second grade in some vocational high school. The students use the Web-based portfolio assessment system for creating their portfolio, emulating peers’ portfolio, and performing self-assessment and peer-assessment. The teacher uses the system for reviewing and assessing students’ learning performances. In regard to the difference among the three assessment approaches, there exists a significant difference among the three approaches. Instructor assessment is most rigorous, while peer-assessment is most slack. In regard to the correlation among the three assessment approaches, there exists a significant consistency between self-assessment and instructor assessment. There exist inconsistencies between self-assessment and peer-assessment as well as peer-assessment and instructor assessment. In regard to the correlation among the three assessment results and test score, there exist a high consistency between instructor assessment and test score. As well, there exist a high consistency between self-assessment and test score. However, the consistency between peer-assessment and test score is inadequate.
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