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Toker, Turker; Green, Kathy – Online Submission, 2012
The least squares distance method (LSDM) was used in a cognitive diagnostic analysis of TIMSS (Trends in International Mathematics and Science Study) items administered to 4,498 8th-grade students from seven geographical regions of Turkey, extending analysis of attributes from content to process and skill attributes. Logit item positions were…
Descriptors: Foreign Countries, Least Squares Statistics, Grade 8, Mathematics Tests
Lewis, Joan D.; DeCamp-Fritson, Stephanie S.; Ramage, Jean C.; McFarland, Max A.; Archwamety, Teara – Multicultural Education, 2007
The purpose of this study was to compare the effectiveness of the Raven's Standard Progressive Matrices, the Naglieri Nonverbal Abilities Test (NNAT), and the Iowa Test of Basic Skills (ITBS) in selecting for ethnically diverse students who may be gifted. The participants of the study were 175 students enrolled in Grades 3-5 and Grade 8 in a…
Descriptors: Gifted, Elementary Education, Nonverbal Ability, Test Validity