Abstract: A method and system for digitally relating psychological characteristics of a subject to on-screen drawings, comprising— providing a display screen and graphic input means that enable the subject to graphically interact with the screen, the interaction including drawing a sequence of strokes, the strokes being associated with a plurality of parameters, at least one parameter being temporal and at least one parameter being geometric; providing a data base that contains relations between stroke parameters and psychological characteristics; letting the subject to graphically interact with the screen and capturing and storing values of parameters corresponding to one or more strokes drawn by the subject in any of the sequences; and relating the captured parameter values from one or more of the sequences to contents of the data base. Optionally, one parameter is of force exerted during drawing.