In this study of 342 adults aged 55-85, researchers saw that lower scores on Posit Science visual attention/processing speed exercises were significantly related to poorer scores on the performance mobility assessment, even after adjustment for age, sex, race, education, number of chronic medical conditions, cognitive status, depressive symptoms, visual acuity, and contrast sensitivity. Scores on the visual attention/processing speed test were unrelated to the self-reported measures of mobility.