Source: This article was published in Teaching and Teacher Education, Volume 27, Issue 6,
Author(s): Wilfried Admiraal, Mark Hoeksma, Marie-Thérèse van de Kamp, Gee van Duin,
"Assessment of Teacher Competence sing Video Portfolios: Reliability, Construct Validity, and Consequential Validity", Pages 1019–1028, Copyright Elsevier (August 2011)
In a post-graduate teacher education program, the assessment of video portfolios was evaluated
for its reliability, construct validity, and consequential validity.
Although video portfolio facilitated a reliable and valid assessment of teacher competencies, procedures to improve assessment quality were also revealed.
These procedures are discussed: more explicit grounding of assessment results in the data, peer debriefing, prolonged engagement with the assessment data, cross-checking to find confirmatory or counter examples.
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