Digital Professional Portfolios of Preservice Teaching: An Initial Study of Score Reliability and Validity
James DiPerna, Penn State University, United States ; Carol Derham, Lehigh University, United States
Journal of Technology and Teacher Education Volume 15, Number 3, ISSN 1059-7069 Publisher: Society for Information Technology & Teacher Education, Waynesville, NC USA
The purpose of this study was to investigate initial evidence regarding the reliability and validity of scores from a digital professional portfolio (DPP) designed to assess the instructional competencies of preservice teachers. Data were collected from 30 preservice teachers during their intern teaching experience. Data were analyzed using a variety of methods including Pearson product-moment correlation coefficients, Cronbach's alpha, and Cohen's kappa coefficient. Evidence supporting the use of the DPP was found through theoretically acceptable relationships with other teacher assessments. Weaknesses of the DPP also were identified, including low percentage of exact agreement between scorers. Directions for future research are discussed.
DiPerna, J. & Derham, C. (2007). Digital Professional Portfolios of Preservice Teaching: An Initial Study of Score Reliability and Validity. Journal of Technology and Teacher Education, 15(3), 363-381. Waynesville, NC USA: Society for Information Technology & Teacher Education. Retrieved March 23, 2023 from https://www.learntechlib.org/primary/p/21010/.
© 2007 Society for Information Technology & Teacher Education
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