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The Cognitive Measurement Lab works is currently pursuing projects with tests of spatial reasoning (SLAT) and quantitative reasoning items. The CML uses an eye-tracker to further our understanding of cognitive solution strategies.Quantitative Reasoning research has developed a 17 component model of factors related to item difficulty and response time for mathematical items. Continuing work seeks to refine this model and improve the predictive power. Experimental tests manipulate related components to the unique contributions of these components in the absence of confounding differences. Future directions of research may include models of incorrect solutions. All work is aimed at creation of algorithms of computer item generation.Spatial reasoning tests have a developed component model. Current efforts attempt to develop a computer program for the algorithmic generation of new items.The eye-tracker studies help in the formulation and testing of component models. With head tracking capabilities, these studies follow participants through a short (10-item) computer test of either quantitative or spatial items. Processing strategy is assessed by ability level and response time.
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