Psychology 1000 Lecture Notes - Lecture 15: Psychophysics, Power Law, University Of Manchester

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Psychophysics: relation between physical stimulus and psychological response. Value of a stimulus characteristic required to produce some response. Difference: amount of change for jnd: so what"s the relation, eg) brightness and perceived brightness, not a 1 to 1 relation. Hearing: tick of a watch at 6m. Taste: tsp of sugar in 8 l of water. Smell: 1 drop of perfume in a 6 room apt. Touch: wing of a fly falling on check from 1 cm. More predictive across a variety of sensations. James vicary (1957) made it up: claimed 50 % increase in popcorn sales. Concern about the use of subliminal cuts . In general, no evidence that subliminal cuts influence consumer behaviour. But, consider bruce & valentine (1986: priming. Fitzsimons et al (2008: 30 msec exposure to. Sensory systems: accessory structures, eg) outer ear, transduction receptors, coding, eg) frequency.