ch 6 - Sensation & Perception Chapter 6...

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Unformatted text preview: Sensation & Perception Chapter 6 Sensation Perception Stimulus Form of energy that can affect sense organs Sensation and Perception Psychophysics Study the relationship between stimuli & our psychological response to them Sensory receptors Detect stimuli & convert energy into neural impulses transduction Receptors are designed to serve very specifc Functions Sensation Thresholds There is a minimum amount of any given sensation that has to be present for us to notice it Absolute threshold Thresholds and Stimulus Change Detection of a stimulus depends on intensity of stimulus Ex. how loud a noise is physical and psychological state of receiver Ex. how alert you are Signal Detection Theory Factors contributing to signal detection biological experience expectations motivation fatigue Signal Detection Theory Subliminal signals signals detected less 50% of the time below the absolute threshold movies, self-help tapes Positive Subliminal Negative Subliminal More Attractive Less Attractive Krosnick, et al (1992) Positive Subliminal Negative Subliminal More Attractive Less Attractive Krosnick, et al (1992) Subliminal Pictures when subliminal signals have a priming effect on thoughts or behaviors generally effective ....
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This note was uploaded on 03/06/2010 for the course PSC 1 taught by Professor Prokosch during the Fall '08 term at UC Davis.

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ch 6 - Sensation & Perception Chapter 6...

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