A method and system are presented to address quantitative assessment of word identification latency of a subject, where the method comprises the steps of: (1) presenting at least one scene, comprising a plurality of letters and a background, to a subject on a display (2) moving the plurality of letters relative to the scene (3) receiving feedback from the subject via the input device (4) quantitatively refining the received feedback (5) modulating the movement of plurality of letters relative to accuracy of the quantitatively refined feedback ((6) calculating a critical threshold parameter and (7) recording a critical threshold parameter onto a tangible computer readable medium.
