A method and system are presented to address quantitative assessment of social interactions nulling testing 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 body images and a background (2) receiving feedback from the subject via at least one input device (3) quantitatively refining the received feedback (4) modulating the adjusted body image relative to the accuracy of the received feedback (5) calculating a critical threshold parameter for the subject (6) recording a critical threshold parameter onto a tangible computer readable medium.