The present invention provides a method and a device for diagnosing schizophrenia. The method of the present invention comprises the steps of: applying a plurality of different sensory stimuli to a subject with any time lag selected from 0 to approximately 1000 msec； obtaining subject's first answer regarding temporal order judgment of the plurality of different sensory stimuli applied； determining whether or not subject's passive time perception is normal on the basis of the first answer； displaying an image of a figure moving at a constant speed； giving a signal to the subject； allowing the subject to respond to the signal, wherein the image of the figure (1 ) changes due to the subject's response 0 to approximately 2000 msec after the response, or (2) changes irrespective of the subject's response within approximately 1000 msec before or after the signal: and obtaining subject's second answer as to whether or not the change in the image of the figure was caused due to the subject's own response.
