Psychology 1000 Lecture Notes - Lecture 5: Sensory Threshold, Psychophysics, Habituation

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Fazakas- De Hoog

Document Summary

Sensation - stimulation of the sense organs (you look with your eyes) Perception - selection, organization, and interpretation of sensory input (you see with your brain) Psychophysics - the study of how physical stimuli are translated into psychological experience. Stimulus information in the environment that is picked up by the receptors in our ns. Difference threshold the minimal amount the stimulus needs to be increased or decreased to be different from the original stimulus (aka just noticeable difference (jnd) Weber" law the difference threshold is directly proportional to the magnitude of the stimulus with which the comparison is being made. The diminishing sensitivity to a constant stimulus over time. Survival value- attend to new stimuli in the environment. Stimuli that register on our ns but are below our sensory threshold) (cid:1005)95(cid:1004)"s james vicary. Flashed (cid:862)su(cid:271)li(cid:373)i(cid:374)al(cid:863) (cid:373)essaged (cid:862)dri(cid:374)k (cid:272)oke(cid:863) a(cid:374)d (cid:862)eat pop(cid:272)or(cid:374)(cid:863) Krosnick study (1992) emotional priming and attitudes effect on attitudes.