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Baly, Michael W. – ProQuest LLC, 2013
This dissertation is comprised of three manuscripts and presents a line of research aimed at improving the measurement of bullying in schools. The first manuscript investigated the impact of an educational video on self-reports of bullying. A sample of 1,283 middle school students in randomly assigned classrooms either watched or did not watch an…
Descriptors: Bullying, Measurement Techniques, Video Technology, Self Disclosure (Individuals)
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Briggs, Derek C. – Educational Researcher, 2008
When causal inferences are to be synthesized across multiple studies, efforts to establish the magnitude of a causal effect should be balanced by an effort to evaluate the generalizability of the effect. The evaluation of generalizability depends on two factors that are given little attention in current syntheses: construct validity and external…
Descriptors: Test Validity, Construct Validity, Inferences, Educational Policy