Abstract: A method for measuring a subject's reaction to stimuli presentation by using a measurement scale, the method including the steps of presenting the subject with stimuli and the measurement scale, enabling the subject to indicate his reaction by moving the position of the scale with reference to time, tracing and recording the scale positions and movements as function of time and detected measurement events, detecting the final scale position, and evaluating and analyzing the measurement data in order to determine the subject's reaction to the stimuli.