Abstract: Methods are provided of measuring and improving attention of a person with first and second eyes. These methods include: displaying one or more stimuli aimed at attracting attention of the person; obtaining, through an eye tracker, positions of the first and second eyes over time; calculating, from the obtained positions of the first and second eyes, a gaze direction evolution for each of the eyes and corresponding angular velocity evolution for each of the gaze directions; determining a motion synchrony evolution of the first and second eyes by comparing the calculated angular velocity evolution of the first eye with the calculated angular velocity evolution of the second eye; and measuring the attention of the person depending on the determined motion synchrony evolution. Computer programs, systems and computer systems that are suitable to perform such methods of measuring and improving attention are also provided.