PSY 3108 Study Guide - Comprehensive Final Exam Guide - Neuron, Sensory Neuron, Retina
20 Nov 2018
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Methods in perception: qualitative: getting the big picture, whole phenomena in their entirety, quantitative: understanding the details, breaking things down; putting numbers, quantitative values; understanding details, threshold-seeking methods. Quantitative methods in perception: threshold seeking methods measure a physical quantity representing a limit of perceptual ability. I. e a threshold: applied examples include visual acuity tests and hearing tests used in medical and professional qualification settings, eg. Show person a level (i. e eye test) and see when they cross a threshold: the o(cid:271)ser(cid:448)er does(cid:374)"t ha(cid:448)e to do a(cid:374)ythi(cid:374)g, method of constant stimuli: very slow but very accurate. Stimulus intensity is adjusted (usually by the observer) continuously until the observer says they can just detect it: threshold is point to which observer adjust the intensity, repeated trials (about 10) averaged for threshold. Fast, but not always accurate, due to inherently subject nature of adjustment.
