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Understanding Reliability and Validity in Research by kinhai_see is a document available to read on EtoBox.
Test instruments: length, content, difficulty level and variance. Test-retest method: coefficient of stability (duration: min 1 day and max I year; 2-3 month period recommended) split-half method: splitting a test into halves and correlate scores. Internal-consistency method: Kuder Richardson and Cronbach alpha 2 d error reliability = rtt = 1 - 2 d obs.
- Author
- kinhai_see
- Language
- EN