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AP Psychology Unit 4 Flashcards

Advanced Placement Psychology
Enterprise High School, Redding, CA
All terms from Myers Psychology for AP (BFW Worth, 2011)

Terms : Hide Images
7313793620sensationthe process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment.0
7313793621perceptionthe process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.1
7313793622bottom-up processinganalysis that begins with the sensory receptors and works up to the brain's integration of sensory information.2
7313793623top-down processinginformation processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations.3
7313793624selective attentionthe focusing of conscious awareness on a particular stimulus.4
7313793625inattentional blindnessfailing to see visible objects when our attention is directed elsewhere.5
7313793626change blindnessfailing to notice changes in the environment.6
7313793627psychophysicsthe study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them.7
7313793628absolute thresholdthe minimum stimulation needed to detect a particular stimulus 50 percent of the time.8
7313793629signal detection theorya theory predicting how and when we detect the presence of a faint stimulus (signal) amid background stimulation (noise). Assumes there is no single absolute threshold and that detection depends partly on a person's experience, expectations, motivation, and alertness.9
7313793632difference thresholdthe minimum difference between two stimuli required for detection 50 percent of the time. Also called the just noticeable difference (jnd).10
7313793633Weber's lawthe principle that, to be perceived as different, two stimuli must differ by a constant percentage (rather than a constant amount).11
7313793634sensory adaptationdiminished sensitivity as a consequence of constant stimulation.12
7313793635transductionconversion of one form of energy into another. In sensation, the transforming of stimulus energies, such as sights, sounds, and smells, into neural impulses our brains can interpret.13
7313793643accomodationthe process by which the eye's lens changes shape to focus near or far objects on the retina.14
7313793650parallel processingthe processing of many aspects of a problem simultaneously; the brain's natural mode of information processing for many functions, including vision. Contrasts with the step-by-step (serial) processing of most computers and of conscious problem solving.15
7313793651Young-Helmholtz trichromatic (three-color) theorythe theory that the retina contains three different color receptors—one most sensitive to red, one to green, one to blue—which, when stimulated in combination, can produce the perception of any color.16
7313793659place theoryin hearing, the theory that links the pitch we hear with the place where the cochlea's membrane is stimulated.17
7313793660frequency theoryin hearing, the theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone, thus enabling us to sense its pitch.18
7313793664kinesthesisthe system for sensing the position and movement of individual body parts.19
7313793665vestibular sensethe sense of body movement and position, including the sense of balance.20
7313793667sensory interactionthe principle that one sense may influence another, as when the smell of food influences its taste.21
7313793668gestaltan organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes22
7313793669figure-groundthe organization of the visual field into objects (the figures) that stand out from their surroundings (the ground).23
7313793671depth perceptionthe ability to see objects in three dimensions although the images that strike the retina are two-dimensional; allows us to judge distance.24
7313793672visual cliffa laboratory device for testing depth perception in infants and young animals.25
7313793673binocular cuesdepth cues, such as retinal disparity, that depend on the use of two eyes.26
7313793674retinal disparitya binocular cue for perceiving depth by comparing images from the retinas in the two eyes, the brain computes distance—the greater the disparity (difference) between the two images, the closer the object.27
7313793675monocular cuesdepth cues, such as interposition and linear perspective, available to either eye alone.28
7313793676phi phenomenonan illusion of movement created when two or more adjacent lights blink on and off in quick succession.29
7313793677perceptual constancyperceiving objects as unchanging (having consistent shapes, size, lightness, and color) even as illumination and retinal images change.30
7313793678color constancyperceiving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.31
7313793679perceptual adaptationin vision, the ability to adjust to an artificially displaced or even inverted visual field.32
7313793680perceptual seta mental predisposition to perceive one thing and not another.33
7313793681extrasensory perception (ESP)the controversial claim that perception can occur apart from sensory input; includes telepathy, clairvoyance, and precognition.34
7313793682parapsychologythe study of paranormal phenomena, including ESP and psychokinesis.35

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