A method is presented to address quantitative assessment of facial emotion sensitivity of a subject, where the method comprises the steps of: (1) presenting at least one scene to the subject on a display, the scene comprising a plurality of faces and a background on a display, the plurality of faces comprising a plurality of facial expressions (2) adjusting at least one facial expression on the scene (3) receiving feedback from said subject via at least one input device (4) quantitatively refining the received feedback (5) modulating the adjusted facial expression relative to the accuracy of the received feedback (6) (7) transforming the modulated facial expression (8) calculating a critical threshold parameter and (9) recording a critical threshold parameter onto a tangible computer readable medium. An apparatus for quantitative assessment of facial emotion sensitivity of a subject comprising a display device, an input device, a control device, and a tangible computer readable medium. In its simplest sense, a quantitative assessment profile of facial emotion sensitivity by psychophysical responses is generated on a tangible computer readable medium.
