(AP PSYCH) Unit 3: Modules 16-21, 23, 24

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Myers Psychology for the AP Course (Third Edition) // Modules 16-21, 23, 24

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84 Terms

1
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Sleep (23)

A periodic, natural loss of consciousness—as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation.

2
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Circadian Rhythm (23)

Our biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occurs on a 24-hour cycle.

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REM Sleep (23)

A recurring sleep stage during which vivid dreams commonly occur. Also known as paradoxical sleep, because the muscles are relaxed (except for minor twitches) but other body systems are active.

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Alpha Waves (23)

The relatively slow brain waves of a relaxed, awake state.

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NREM Sleep (23)

Encompasses all sleep stages except for REM sleep.

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Hallucinations (23)

False sensory experiences, such as seeing something in the absence of an external visual stimulus.

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Hypnagogic Sensations (23)

Bizarre experiences, such as jerking or a feeling of falling or floating weightlessly, while transitioning to sleep.

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Delta Waves (23)

The large, slow brain waves associated with the deep sleep of NREM-3.

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Suprachiasmatic Nucleus (SCN) (23)

A pair of cell clusters in the hypothalamus that controls circadian rhythm. In response to light, it causes the pineal gland to adjust melatonin production, thus modifying our feelings of sleepiness.

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Insomnia (24)

Recurring problems in falling or staying asleep.

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Narcolepsy (24)

A sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep, often at inopportune times.

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Sleep Apnea (24)

A sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings.

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Night Terrors (24)

A sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, these occur during NREM-3 sleep, within two or three hours of falling asleep, and are seldom remembered.

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Dreams (24)

A sequence of images, emotions, and thoughts passing through a sleeping person‘s mind.

15
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Manifest Content (24)

According to Freud, the symbolic, remembered story line of a dream (as distinct from its latent, or hidden, content).

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Latent Content (24)

According to Freud, the underlying meaning of a dream (as distinct from its manifest content).

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REM Rebound (24)

The tendency for REM sleep to increase following REM sleep deprivation.

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Wavelength (18)

The distance from the peak of one light or sound wave to the peak of the next. Electromagnetic ones vary from the short blips of gamma rays to the long pulses of radio transmission.

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Hue (18)

The dimension of color that is determined by the wavelength of light; what we know as the color names blue, green, and so forth.

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Intensity (18)

The amount of energy in a light wave or sound wave, which influences what we perceive as brightness or loudness. It is determined by the wave's amplitude (height).

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Cornea (18)

The eyes clear, protective outer layer, covering the pupil and iris.

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Pupil (18)

The adjustable opening in the center of the eye through which light enters.

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Iris (18)

A ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening.

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Lens (18)

The transparent structure behind the pupil that changes shape to help focus images on the retina.

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Retina (18)

The light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information.

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Accommodation (18)

The process by which the eye’s lens changes shape to focus near or far objects on the retina.

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Rods (18)

Retinal receptors that detect black, white, and gray, and are sensitive to movement; necessary for peripheral and twilight vision, when cones don’t respond.

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Cones (18)

Retinal receptors that are concentrated near the center of the retina and that function in daylight or in well-lit conditions. These detect fine detail and give rise to color sensations.

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Optic Nerve (18)

The nerve that carries neural impulses from the eye to the brain.

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Blind Spot (18)

The point at which the optic nerve leaves the eye. No receptor cells are located there.

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Fovea (18)

The central focal point in the retina, around which the eye’s cones cluster.

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Young-Helmholtz Trichromatic (Three-Color) Theory (18)

The theory that the retina contains three different types of 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.

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Opponent-Process Theory (18)

The theory that opposing retinal processes (red-green, blue-yellow, white-black) enable color vision. For example, some cells are stimulated by green and inhibited by red; others are stimulated by red and inhibited by green.

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Feature Detectors (18)

Nerve cells in the brain’s visual cortex that respond to specific features of the stimulus, such as shape, angle, or movement.

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Parallel Processing (18)

Processing many aspects of a problem simultaneously; the brain’s natural mode of information processing for many functions, including vision.

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Gestalt (19)

An organized whole. Psychologists emphasized our tendency to integrate pieces of information into meaningful wholes.

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Figure-Ground (19)

The organization of the visual field into objects that stand out from their surroundings.

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Grouping (19)

The perceptual tendency to organize stimuli into coherent groups.

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Depth Perception (19)

The ability to see objects in three dimensions although the images that strike the retina are two-dimensional; allows us to judge distance.

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Visual Cliff (19)

A laboratory device for testing depth perception in infants and young animals.

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Binocular Cues (19)

A depth cue, such as retinal disparity, that depends on the use of two eyes.

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Retinal Disparity (19)

A binocular cue for perceiving depth. By comparing retinal images from the two eyes, the brain computes distance—the greater the disparity (difference) between the two images, the closer the object.

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Monocular Cues (19)

A depth cue, such as interposition or linear perspective, available to either eye alone.

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Phi Phenomenon (19)

An illusion of movement created when two or more adjacent lights blink on and off in quick succession.

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Perceptual Constancy (19)

Perceiving objects as unchanging (having consistent color, brightness, shape, and size) even as illumination and retinal images change.

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Color Constancy (19)

Perceiving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.

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Perceptual Adaptation (19)

The ability to adjust to changed sensory input, including an artificially displaced or even inverted visual field.

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Sensation (16)

The process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment.

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Sensory Receptors (16)

Sensory nerve endings that respond to stimuli.

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Perception (16)

The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.

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Bottom-Up Processing (16)

Analysis that begins with the sensory receptors and works up to the brain’s integration of sensory information.

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Top-Down Processing (16)

Information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations.

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Selective Attention (16)

The focusing of conscious awareness on a particular stimulus.

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Inattentional Blindness (16)

Failing to see visible objects when our attention is directed elsewhere.

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Change Blindness (16)

Failing to notice changes in the environment; a form of inattentional blindness.

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Transduction (16)

Conversion of one form of energy into another. In sensation, the transforming of stimulus energies, such as sights, sounds, and smells, into neural impulses our brain can interpret.

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Psychophysics (16)

The study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them.

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Absolute Threshold (16)

The minimum stimulus energy needed to detect a particular stimulus 50 percent of the time.

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Signal Detection Theory (16)

A 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.

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Subliminal (16)

Below one’s absolute threshold for conscious awareness.

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Difference Threshold (16)

The minimum difference between two stimuli required for detection 50 perfect of the time.

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Priming (16)

The activation, often unconsciously, of certain associations, thus predisposing one’s perception, memory, or response.

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Weber’s Law (16)

The principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount).

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Sensory Adaptation (16)

Diminished sensitivity as a consequence of constant stimulation.

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Perceptual Set (17)

A mental predisposition to perceive one thing and not another.

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Extrasensory Perception (ESP) (17)

The controversial claim that perception can occur apart from sensory input; includes telepathy, clairvoyance, and precognition.

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Parapsychology (17)

The study of paranormal phenomena, including ESP and psychokinesis.

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Audition (20)

The sense or act of hearing.

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Frequency (20)

The number of complete wavelengths that pass a point in a given time (for example, per second).

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Pitch (20)

A tone’s experienced highness or lowness; depends on frequency.

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Middle Ear (20)

The chamber between the eardrum and cochlea containing three tiny bones (hammer, anvil, and stirrup) that concentrate the vibrations of the eardrum on the cochlea’s oval window.

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Cochlea (20)

A coiled, bony, fluid-filled tube in the inner ear; sound waves traveling through the cochlear fluid trigger nerve impulses.

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Inner Ear (20)

The innermost part of the ear, containing the cochlea, semicircular canals, and vestibular sacs.

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Sensorineural Hearing Loss (20)

Hearing loss caused by damage to the cochlea’s receptor cells or to the auditory nerves; the most common form of hearing loss, also called nerve deafness.

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Conduction Hearing Loss (20)

A less common form of hearing loss, caused by damage to the mechanical system that conducts sound waves to the cochlea.

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Cochlear Implant (20)

A device for converting sounds into electrical signals and stimulating the auditory nerve through electrodes threaded into the cochlea.

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Place Theory (20)

In hearing, the theory that links the pitch we hear with the place where the cochlea’s membrane is stimulated.

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Frequency Theory (20)

In 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. (Also called temporal theory.)

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Gate-Control Theory (21)

The theory that the spinal cord contains a neurological “gate” that blocks pain signals or allows them to pass on to the brain. The “gate” is opened by the activity of pain signals traveling up small nerve fibers and is closed by activity in larger fibers or by information coming from the brain.

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Olfaction (21)

The sense of smell.

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Kinesthesia (21)

Our movement sense—our system for sensing the position and movement of individual body arts.

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Vestibular Sense (21)

Our sense of body movement and position that enables our sense of balance.

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Sensory Interaction (21)

The principle that one sense may influence another, as when the smell of food influences its taste.

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Embodied Cognition (21)

The influence of bodily sensations, gestures, and other states on cognitive preferences and judgments.