perception chp6
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Myers Chp. 6 PsychologyTRANSCRIPT
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Chapter 6 Perception
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Perception• Selective Attention
• focus of conscious awareness on a particular stimulus
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Perceptual Organization- Gestalt
• Visual Capture– tendency for vision to dominate the
other senses
• Grouping– the perceptual tendency to organize
stimuli into coherent groups
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Perceptual Organization- Gestalt• Gestalt- an organized whole
– tendency to integrate pieces of information into meaningful wholes
• Grouping Principles– proximity- group nearby figures together– similarity- group figures that are similar– continuity- perceive continuous patterns– closure- fill in gaps– connectedness- spots, lines and areas are seen
as unit when connected
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Perceptual Organization
• Figure and Ground
• organization of the visual field into objects (figures) that stand out from their surroundings (ground)
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Perceptual Organization- Grouping Principles
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Perceptual Organization- Grouping Principles
• Gestalt grouping principles are at work here.
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Perceptual Organization-Depth Perception• Depth Perception
– ability to see objects in three dimensions– allows us to judge distance
• Binocular cues– retinal disparity
• images from the two eyes differ • closer the object, the larger the disparity
– convergence• neuromuscular cue• two eyes move inward for near objects
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Perceptual Organization-Depth Perception
Visual Cliff
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Perceptual Organization-Depth Perception• Monocular Cues
– relative size• smaller image is more distant
– interposition• closer object blocks distant object
– relative clarity• hazy object seen as more distant
– texture • coarse --> close
fine --> distant
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Perceptual Organization-Depth Perception
Relative Size
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Perceptual Organization-Depth Perception
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Perceptual Organization-Depth Perception
• Monocular Cues (cont.)– relative height
• higher objects seen as more distant
– relative motion• closer objects seem to move faster
– linear perspective• parallel lines converge with distance
– relative brightness• closer objects appear brighter
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Perceptual Organization-Depth Perception
Perspective Techniques
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Perceptual Constancy
– perceiving objects as unchanging despite changes in retinal image• color• shape • size
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Perceptual Organization-Muller-Lyer Illusion
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Perceptual Organization- Size-Distance Relationship
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Perceptual Organization-Brightness Contrast
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Sensory Restriction-Blakemore & Cooper, 1970
• Kittens raised without exposure to horizontal lines later had difficulty perceiving horizontal bars.
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Perceptual Interpretation• Perceptual Adaptation
– (vision) ability to adjust to an artificially displaced visual field•prism glasses
• Perceptual Set– a mental predisposition to
perceive one thing and not another
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Perceptual Set-Schemas• What you see in the
center is influenced by perceptual set
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Perceptual Set-Schemas
Flying Saucers or Clouds?
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Perceptual Set- Human Factors
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Perception without Sensation?• Extrasensory Perception
– controversial claim that perception can occur apart from sensory input• telepathy• clairvoyance• precognition
• Parapsychology– the study of paranormal phenomena
• ESP• psychokinesis