Dr. Brett Jefferson has expertise in cognitive modelling and topological data analysis methods. As a perception modeler, Dr. Jefferson takes a systems approach to accounting for visual and perceptual processes. Resulting, dimensions of visual perception previously believed to be independent now have evidence that suggest large-scale dependencies. In addition to work in perception, the relatively new analysis techniques in TDA provide a robust approach to capturing qualitative trends in data. From cyclical patterns in numerical data to assessing consistency throughout a corpora, topological methods are proving useful to extending pattern recognition beyond classic statistical approaches. Dr. Jefferson is interested in comparing the methodologies across domains and datasets to discover new insights offered by the combination of tools.