She blinked up out of her avid shameclosing eyes, mewing plaintively and long, showing him her milkwhite teeth

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As you read these words, try paying attention to something you usually never notice: the movements of your eyes. While you scan these lines of text, or glance at that ad over there or look up from the screen at the room beyond, your eyes are making tiny movements, called saccades, and brief pauses, called fixations. Scientists are discovering that eye movement patterns — where we look, and for how long — reveals important information about how we read, how we learn and even what kind of people we are.

Researchers are able to identify these patterns thanks to the development of eye-tracking technology: video cameras that record every minuscule movement of the eyes. Such equipment, originally developed to study the changes in vision experienced by astronauts in zero-gravity conditions, allows scientists to capture and analyze that always-elusive entity, attention. The way we move our eyes, it turns out, is a reliable indicator of what seizes our interest and of what distracts us. (…)

Eye movements are so closely tied to the way we think and act that they can even reveal information about our personalities. In a study published this month in the journal Cognition, researcher Evan Risko and his coauthors asked experimental subjects to complete a questionnaire gauging their levels of curiosity, defined as a desire for new knowledge and new experiences. The scientists then used eye-tracking equipment to record the eye movements of participants as they viewed a series of scenes. People who tested as highly curious, Risko reported, looked at many more elements of the pictures, restlessly moving their eyes around the scenes. “Who a person is,” he concluded, “relates to how they move their eyes.”

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images { 1. Robert Longo | 2. Floris M. Neusüss }