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Chapter 5 & 6 - Chapter 5 6 Sense and perception Sense...

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Chapter 5 & 6 Sense and perception Sense and Perception o Sense- what we detect in our environment o Perception- what we interpret that we detect in our environment Perception is different between most people o Bottom- up processing Starts with sensation, and detection of energy in the environment, then works its way up to the higher level processing (perception) o Top-down processing The other way, start at top with knowledge, then works its way down and changes the things we detect Ex ; The paragraph with the jumbled letters How our senses work? o Absolute Threshold The smallest level that we can detect something 50% of the time. For vision- 30 miles away on a clear night Hearing : a watch ticking at 20 feet away Taste: 1 teaspoon of sugar in 2 gallons of water Smell: single drop of perfume in a 2 room house Touch: a bee’s wing falling onto a cheek
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o Signal Detection Theory What conditions certain people in which they will detect the lowest level o Subliminal Messages (sense below threshold Unaware, unconscious o Difference Threshold ( just noticeable difference) The lowest level to differentiate between stimuli o Weber’s Law
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  • Spring '08
  • LANE
  • Depth perception, Nearsightedness Farsightedness Smell, Monocular Cues Relative, taste Genetic effects, higher level processing

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