OBJECTIVE INDICATORS OF PERCEPTION

B okander , I. Objective indicators of perception. I. Simple reaction-time. Scand. J. Psychol ., 1962, 3, 192–195.—This paper demonstrates that simple reaction-time, viz. the time interval between the onset of a meaningful picture stimulus and a simple motor response, is dependent upon the nature of the picture in such a way that stimuli selected to produce more involvement give longer reaction-times. Two experiments were performed. In the first, involving and neutral stimuli were centered around the middle of the pictures, while the second pair of pictures differed with respect to peripheral qualities.