PSYC 1160 Study Guide - Final Guide: Wind Chill, Additive Color, Absolute Threshold
18 Mar 2017
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Sensation: process that detects stimuli from our bodies and the environment, gathers information, sense of hear sounds. Perception: process that organizes those sensations into meaningful patterns, perceive sounds as words, meanings to vibrations. Stimulus energy (light, sound) sensory receptors (ears, eyes) neural impulses brain. Jnd minimum amount of additional sugar to say your coffee is sweeter. Weber-fechner law- amount of change needed for a jnd is proportional to the original stimulus with ratios (1:50 weight, one pound added to 50lbs, you will be able to feel a difference. For 2:100, two pounds needed to identify the jnd on 100lbs) Relation between physical characteristics of a stimulus by examining reaction times. Steven"s power law- the sensation you experience is proportional to the intensity of the stimulus raised to a power. Length (2:2) sound (3:2) brightness (8:2) 8 times brighter than what you perceive as double, shock (2:11) (2nd number= your perception or what you think it is)
