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DeMars, Christine E. – International Journal of Testing, 2013
This tutorial addresses possible sources of confusion in interpreting trait scores from the bifactor model. The bifactor model may be used when subscores are desired, either for formative feedback on an achievement test or for theoretically different constructs on a psychological test. The bifactor model is often chosen because it requires fewer…
Descriptors: Test Interpretation, Scores, Models, Correlation
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Erdogan, Mehmet – International Journal of Environmental and Science Education, 2015
The purpose of this study was to assess the effects of Summer Environmental Education Program (SEEP) on elementary school students' environmental knowledge, affect, skills and behavior which are the main components of environmental literacy. The sample consisted of 45 students (25 males, 20 females) studying in 4th through 8th grades and living in…
Descriptors: Summer Programs, Environmental Education, Elementary School Students, Knowledge Level