Comparisons of reliability and validity between teacher-assessment, student self-assessment, and peer-assessment in a web-based portfolio assessment environment

Chi-Cheng Chang, Ming Fun Wu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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 selfassessment 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 selfassessment 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.

Original languageEnglish
Pages (from-to)135-170
Number of pages36
JournalJournal of Educational Media and Library Science
Volume49
Issue number1
Publication statusPublished - 2012 Mar 6

Keywords

  • Peer-assessment
  • Self-assessment
  • Web-based portfolio
  • Web-based portfolio assessment

ASJC Scopus subject areas

  • Conservation
  • Information Systems
  • Archaeology
  • Library and Information Sciences

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