Chapter 6 Perception Flashcards
Perception
the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events
Selective Attention
the focusing of conscious awareness on particular stimulus, as in the cocktail party effect
Cocktail Party Effect
In your ability to attend to only one voice among many (though let another voice speak your name and your cognitive radar will instantly bring voice that voice into consciousness)
Inattentional blindness
failing to see visible objects when our attention when is directed elsewhere
Change blindness
inattentional blindness ( gorilla in room, direction)
Change deafness
inattentional deafness
Choice blindness
failure to notice our selection of a particular stimulus has change
Choice-blindness blindness
exhibiting denial (blindness) to falling victim to a hypothetical experiment
Pop-out phenomenon
when a strikingly distinct stimulus, such as a smiling face in a crowd of crying people, draws our attention, not our choice
Illusion
reveal the ways we normally organize and interpret out sensation
visual capture
the tendency for vision to dominate the other senses
gestalt
organized whole, gestalt psychologist emphasized our tendency to integrate pieces of information into meaningful whole
figure-ground
organization of the visual field into objects that stand out from their surrounding
grouping
the perceptual tendency to organize stimuli into coherent group
proximity
we group nearby figures together
similarity
we group together figures that are similar to each other
continuity
we perceive smooth, continuous pattern rather than discontinuous messes
connectedness
because they are uniform and linked, we perceive the two dots and the line between them as a single unit
closure
we fill in the gaps to create a complete whole objects
Depth perception
the ability to see objects in three dimensions although the images that strike the retina are two dimensional; allows us to judge distance
viusal cliff
a laboratory device for testing depth perception in infants and young animals
binocular cues
depth cues, such as retinal disparity and convergence, that depend on the use of two eyes
Retinal Desparity
binocular cues; comparing images from the two eyeballs, the brain computers distance- the greater the difference between the two images the closer the object
convergence
extent to which the eyes converge, inward when looking at an object, the greater the inward strain, the closer the object
monocular cues
depth cues, such as interposition and linear perspective, available to either eye alone
relative size
two objects are similar size, perceive the one that casts the smaller retinal images as farther away
interpositon
one object partially black our view of another we perceive it as closer
relative clarity
light from distant objects passes through more atmosphere, perceive hazy objects as farther away than sharp, clear objects
texture gradient
objects far away appear smaller and more density packed
relative height
perceive objects higher in our field of vision as farther away
relative motion
objects that are actually stable may appear to move (beyond fixation point)
linear perspective
parallel lines appear to converge with distance
light and shadow
nearby objects reflect more light to our eyes
Phi phenomenon
an illusion of movement created when two or more adjacent lights blink on and off in quick succession
Stroboscopic Movement
perceive continuous movement in a rapid series of slightly varying images
perceptual constancy
perceiving objects as unchanging (having consistent lightness, color, shape and size) even as illuminating and retinal images
perceptual adaptation
in vision, the ability to adjust to an artificially displaced or even inverted visual field
Context Effects
the context (environmental factors) that surrounds an event effects how an event is perceived and remembered
Perceptual set
mental predisposition to perceive one thing and not another
Human factors psychologists
branch of psychology that explores how people and machine interact and how machines and physical environment can be made safe and easy to use
Extrasensory perception
controversial claim that perception can occur apart from sensory input said to include telepathy, clairvoyance, and precognition
parapsychology
study of paranormal phenomena, including ESP and psychokinesis