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Schneider, Dana Lynn – ProQuest LLC, 2012
After multiple reviews of the literature, which documented that multiple cognitive processes may be involved in mathematics ability and disability, Geary (1993) proposed a model that included three subtypes of math disability: Semantic, Procedural, and Visuospatial. A review of the extant literature produced three studies that examined Geary's…
Descriptors: Predictor Variables, Computation, Children, Early Adolescents
Christian, Caroline – ProQuest LLC, 2010
The Visual-Spatial Chemistry Specific (VSCS) assessment tool was developed to test students' visual-perceptual skills, which are required to form a mental image of an object. The VSCS was designed around the theoretical framework of Rochford and Archer that provides eight distinct and well-defined visual-perceptual skills with identified problems…
Descriptors: Item Response Theory, Factor Analysis, Chemistry, Science Instruction