Statistics Corner: Consistency of measurement categories and subcategories

Article appearing in Shiken 20.2 (November 2016) pp. 21-24.

Author: James Dean Brown
University of Hawai'i at Mānoa

Question:
This column responds to an email I recently received which raised what is clearly the most concise, even terse, question I have ever received for this column: "Hello....what is the exact difference between external reliability and internal reliability in quantitative research?"

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JALT is the Japan Association for Language Teaching, a nonprofit organization dedicated to the improvement of language teaching and learning. The TEVAL SIG is a Special Interest Group of researchers within JALT who are interested in testing and the evaluation of language learning outcomes.

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