PSY280H5 Study Guide - Midterm Guide: Cochlea, Eye Examination, Scoville Scale
Document Summary
The nature of psychophysical scales and how they measure the relation of stimuli in the world and our perceptions of it. Audiologist (ear doctor) and optometrist (eye doctor) conduct a series of psychophysical tests in order to. Methods that are used to determine psychophysical properties of the observer, including the observer"s thresholds. Stimuli are presented on a graduated scale participants must judge the stimuli along a certain property that goes up or down. Visual test participant is presented with an increasingly dimmer set of lights. Must tell when the lights are no longer visible then participant is presented with lights so dim that they cannot be seen and presented with increasingly intense lights until the participant detects them. Thresholds- ability to detect differences between stimuli along a particular dimension. Absolute thresholds- are the smallest amount of a stimulus necessary for an observer to detect its presence.
