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Direct linkGlynn, Shawn M. – Journal of Research in Science Teaching, 2012
The Trends in International Mathematics and Science Study (TIMSS) is a comparative assessment of the achievement of students in many countries. In the present study, a rigorous independent evaluation was conducted of a representative sample of TIMSS science test items because item quality influences the validity of the scores used to inform…
Descriptors: Foreign Countries, Item Response Theory, Psychometrics, Science Tests
