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Direct linkAlmehrizi, Rashid S. – Applied Measurement in Education, 2021
KR-21 reliability and its extension (coefficient [alpha]) gives the reliability estimate of test scores under the assumption of tau-equivalent forms. KR-21 reliability gives the reliability estimate for summed scores for dichotomous items when items are randomly sampled from an infinite pool of similar items (randomly parallel forms). The article…
Descriptors: Test Reliability, Scores, Scoring, Computation
Kyriakides, Leonidas; Kaloyirou, Chrystalla; Lindsay, Geoff – British Journal of Educational Psychology, 2006
Background: Bullying is a problem in schools in many countries. There would be a benefit in the availability of a psychometrically sound instrument for its measurement, for use by teachers and researchers. The Olweus Bully/Victim Questionnaire has been used in a number of studies but comprehensive evidence on its validity is not available. Aims:…
Descriptors: Mathematical Formulas, Probability, Victims of Crime, Student Behavior
