PSYB51H3 Chapter Notes - Chapter 1: Visual Angle, Fourier Analysis, Receiver Operating Characteristic
Document Summary
Sensation: the ability to detect the pressure of a finger, and perhaps, to turn that detection into a private experience. Perception: the act of giving meaning to sensations. This method requires creating many different stimuli with different intensities in order to find the tiniest intensity that can be detected. The stimulus varies for several reasons the observer varies, the sensory systems fluctuate, attention waivers, etc. Participants respond to each stimulus with yes/no ro same/different responses. This method may be simple to use, but it is inefficient in an experiment because (cid:373)u(cid:272)h of the su(cid:271)je(cid:272)t(cid:859)s ti(cid:373)e is spent with the stimuli that are clearly well above or below the threshold. With this method the experimenter begins with the same setoff stimuli of tones varying in intensities, and instead of random representations, the tones are represented in an order of increasing or decreasing limits.
