All Words Flashcards
Adaptations
In evolutionary theory, the physical characteristics, skills, or abilities that increase the chances of reproduction or survival and are therefore likely to be passed along to future generations. (page 13)
Behaviorism
A psychological approach that emphasizes the role of environmental forces in producing observable behavior. (page 15)
Cognitive neuroscience
The study of the neural mechanisms underlying thought, learning, perception, language, and memory. (page 17)
Critical thinking
Systematically questioning and evaluating information using well-supported evidence. (page 5)
Culture
The beliefs, values, rules, and customs that exist within a group of people who share a common language and environment. (page 10)
Evolutionary theory
A theory presented by the naturalist Charles Darwin; it views the history of a species in terms of the inherited, adaptive value of physical characteristics, of mental activity, and of behavior. (page 13)
Functionalism
An approach to psychology concerned with the adaptive purpose, or function, of mind and behavior. (page 13)
Gestalt theory
A theory based on the idea that the whole of personal experience is different from the sum of its constituent elements. (page 15)
Humanistic psychology
This approach focuses on the basic goodness of people and how they become happier and more fulfilled. (page 16)
Introspection
A systematic examination of subjective mental experiences that requires people to inspect and report on the content of their thoughts. (page 12)
Mind/body problem
A fundamental psychological issue: Are mind and body separate and distinct, or is the mind simply the physical brain’s subjective experience? (page 10)
Natural selection
In evolutionary theory, the idea that those who inherit characteristics that help them adapt to their particular environments have a selective advantage over those who do not. (page 13)
Nature/nurture debate
The arguments concerning whether psychological characteristics are biologically innate or acquired through education, experience, and culture. (page 10)
Psychoanalysis
A method developed by Sigmund Freud that attempts to bring the contents of the unconscious into conscious awareness so that conflicts can be revealed. (page 14)
Psychological science
The study, through research, of mind, brain, and behavior. (page 4)
Stream of consciousness
A phrase coined by William James to describe each person’s continuous series of ever-changing thoughts. (page 12)
Structuralism
An approach to psychology based on the idea that conscious experience can be broken down into its basic underlying components. (page 12)
Unconscious
The place where mental processes operate below the level of conscious awareness. (page 14)
Term
Description
Acetylcholine (ACh)
The neurotransmitter responsible for motor control at the junction between nerves and muscles; it is also involved in mental processes such as learning, memory, sleeping, and dreaming. (page 78)
Action potential
The electrical signal that passes along the axon and subsequently causes the release of chemicals from the terminal buttons. (page 72)
All-or-none principle
The principle that when a neuron fires, it fires with the same potency each time; a neuron either fires or not – it cannot partially fire, although the frequency of firing can vary. (page 75)
Amygdala
A brain structure that serves a vital role in learning to associate things with emotional responses and in processing emotional information. (page 86)
Autonomic nervous system (ANS)
A component of the peripheral nervous system; it transmits sensory signals and motor signals between the central nervous system and the body’s glands and internal organs. (page 98)
Axon
A long, narrow outgrowth of a neuron by which information is conducted from the cell body to the terminal buttons. (page 71)
Basal ganglia
A system of subcortical structures that are important for the planning and production of movement. (page 87)
Brain stem
An extension of the spinal cord; it houses structures that control functions associated with survival, such as heart rate, breathing, swallowing, vomiting, urination, and orgasm. (page 84)
Broca’s area
A small portion of the left frontal region of the brain, crucial for the production of language. (page 82)
Cell body
The site in the neuron where information from thousands of other neurons is collected and integrated. (page 71)
Central nervous system (CNS)
The brain and the spinal cord. (page 70)
Cerebellum
A large, convoluted protuberance at the back of the brain stem; it is essential for coordinated movement and balance. (page 84)
Cerebral cortex
The outer layer of brain tissue, which forms the convoluted surface of the brain; the site of all thoughts, perceptions, and complex behaviors. (page 87)
Chromosomes
Structures within the cell body that are made up of DNA, segments of which comprise individual genes. (page 106)
Corpus callosum
A massive bridge of millions of axons that connects the hemispheres and allows information to flow between them. (page 87)
Dendrites
Branchlike extensions of the neuron that detect information from other neurons. (page 71)
Dizygotic twins
Also called fraternal twins; twin siblings that result from two separately fertilized eggs and therefore are no more similar genetically than non-twin siblings. (page 111)
Dominant gene
A gene that is expressed in the offspring whenever it is present. (page 108)
Dopamine
A monoamine neurotransmitter involved in motivation, reward, and motor control over voluntary movement. (page 79)
Electroencephalograph (EEG)
A device that measures electrical activity in the brain. (page 82)
Endocrine system
A communication system that uses hormones to influence thoughts, behaviors, and actions. (page 99)
Endorphins
Neurotransmitters involved in natural pain reduction and reward. (page 80)
Frontal lobes
Regions of the cerebral cortex – at the front of the brain – important for movement and higher-level psychological processes associated with the prefrontal cortex. (page 84)
Functional magnetic resonance imaging (fMRI)
An imaging technique used to examine changes in the activity of the working human brain by measuring changes in the blood’s oxygen levels. (page 84)
GABA
Gamma-aminobutyric acid; the primary inhibitory transmitter in the nervous system. (page 80)
Gene expression
Whether a particular gene is turned on or off. (page 106)
Genes
The units of heredity that help determine the characteristics of an organism. (page 106)
Genotype
The genetic constitution of an organism, determined at the moment of conception. (page 108)
Glutamate
The primary excitatory transmitter in the nervous system. (page 80)
Gonads
The main endocrine glands involved in sexual behavior: in males, the testes; in females, the ovaries. (page 100)
Heredity
Transmission of characteristics from parents to offspring through genes. (page 113)
Heritability
A statistical estimate of the extent to which variation in a trait within a population is due to genetics. (page 113)
Hippocampus
A brain structure that is associated with the formation of memories. (page 86)
Hormones
Chemical substances, released from endocrine glands, that travel through the bloodstream to targeted tissues; the tissues are subsequently influenced by the hormones. (page 99)
Hypothalamus
A brain structure that is involved in the regulation of bodily functions, including body temperature, body rhythms, blood pressure, and blood glucose levels; it also influences our basic motivated behaviors. (page 86)
Magnetic resonance imaging (MRI)
A method of brain imaging that uses a powerful magnetic field to produce high-quality images of the brain. (page 83)
Monozygotic twins
Also called identical twins; twin siblings that result from one zygote splitting in two and therefore share the same genes. (page 111)
Myelin sheath
A fatty material, made up of glial cells, that insulates some axons to allow for faster movement of electrical impulses along the axon. (page 74)
Neurons
The basic units of the nervous system; cells that receive, integrate, and transmit information in the nervous system. They operate through electrical impulses, communicate with other neurons through chemical signals, and form neural networks. (page 70)
Neurotransmitters
Chemical substances that transmit signals from one neuron to another. (page 75)
Nodes of Ranvier
Small gaps of exposed axon, between the segments of myelin sheath, where action potentials take place. (page 74)
Norepinephrine
A monoamine neurotransmitter involved in states of arousal and attention. (page 79)
Occipital lobes
Regions of the cerebral cortex – at the back of the brain – important for vision. (page 88)
Parasympathetic division
A division of the autonomic nervous system; it returns the body to its resting state. (page 99)
Parietal lobes
Regions of the cerebral cortex – in front of the occipital lobes and behind the frontal lobes – important for the sense of touch and for attention to the environment. (page 88)
Peripheral nervous system (PNS)
All nerve cells in the body that are not part of the central nervous system. The peripheral nervous system includes the somatic and autonomic nervous systems. (page 70)
Phenotype
Observable physical characteristics, which result from both genetic and environmental influences. (page 108)
Pituitary gland
A gland located at the base of the hypothalamus; it sends hormonal signals to other endocrine glands, controlling their release of hormones. (page 99)
Plasticity
A property of the brain that allows it to change as a result of experience or injury. (page 101)
Positron emission tomography (PET)
A method of brain imaging that assesses metabolic activity by using a radioactive substance injected into the bloodstream. (page 83)
Prefrontal cortex
The frontmost portion of the frontal lobes, especially prominent in humans; important for attention, working memory, decision making, appropriate social behavior, and personality. (page 90)
Receptors
In neurons, specialized protein molecules on the postsynaptic membrane; neurotransmitters bind to these molecules after passing across the synapse. (page 76)
Recessive gene
A gene that is expressed only when it is matched with a similar gene from the other parent. (page 108)
Resting membrane potential
The electrical charge of a neuron when it is not active. (page 72)
Reuptake
The process whereby a neurotransmitter is taken back into the presynaptic terminal buttons, thereby stopping its activity. (page 77)
Serotonin
A monoamine neurotransmitter important for a wide range of psychological activity, including emotional states, impulse control, and dreaming. (page 79)
Somatic nervous system (SNS)
A component of the peripheral nervous system; it transmits sensory signals and motor signals between the central nervous system and the skin, muscles, and joints. (page 97)
Split brain
A condition that occurs when the corpus callosum is surgically cut and the two hemispheres of the brain do not receive information directly from each other. (page 92)
Sympathetic division
A division of the autonomic nervous system; it prepares the body for action. (page 98)
Synapse
The gap between the terminal buttons of a “sending” neuron and the dendrites of a “receiving” neuron; the site at which chemical communication occurs between neurons. (page 72)
Temporal lobes
Regions of the cerebral cortex – below the parietal lobes and in front of the occipital lobes – important for processing auditory information, for memory, and for object and face perception. (page 90)
Terminal buttons
At the ends of axons, small nodules that release chemical signals from the neuron into the synapse. (page 72)
Thalamus
The gateway to the brain; it receives almost all incoming sensory information before that information reaches the cortex. (page 86)
Transcranial magnetic stimulation (TMS)
The use of strong magnets to briefly interrupt normal brain activity as a way to study brain regions. (page 84)
Term
Description
Activation-synthesis theory
A theory of dreaming; this theory proposes that the brain tries to make sense of random brain activity that occurs during sleep by synthesizing the activity with stored memories. (page 140)
Addiction
Drug use that remains compulsive despite its negative consequences. (page 148)
Change blindness
A failure to notice large changes in one’s environment. (page 129)
Circadian rhythms
Biological patterns that occur at regular intervals as a function of time of day. (page 133)
Consciousness
One’s subjective experience of the world, resulting from brain activity. (page 122)
Dreams
Products of an altered state of consciousness in which images and fantasies are confused with reality. (page 139)
Hypnosis
A social interaction during which a person, responding to suggestions, experiences changes in memory, perception, and/or voluntary action. (page 143)
Insomnia
A disorder characterized by an inability to sleep that causes significant problems in daily living. (page 135)
Meditation
A mental procedure that focuses attention on an external object or on a sense of awareness. (page 145)
Narcolepsy
A sleep disorder in which people experience excessive sleepiness during normal waking hours, sometimes going limp and collapsing. (page 136)
Obstructive sleep apnea
A disorder in which a person, while asleep, stops breathing because his or her throat closes; the condition results in frequent awakenings during the night. (page 136)
REM sleep
The stage of sleep marked by rapid eye movements, paralysis of motor systems, and dreaming. (page 135)
Subliminal perception
The processing of information by sensory systems without conscious awareness. (page 132)
Traumatic brain injury (TBI)
Impairments in mental functioning caused by a blow to or very sharp movement of the head. (page 124)
Term
Description
Absolute threshold
The minimum intensity of stimulation that must occur before you experience a sensation. (page 167)
Audition
Hearing; the sense of sound perception. (page 188)
Binocular depth cues
Cues of depth perception that arise from the fact that people have two eyes. (page 182)
Binocular disparity
A depth cue; because of the distance between the two eyes, each eye receives a slightly different retinal image. (page 182)
Bottom-up processing
Perception based on the physical features of the stimulus. (page 164)
Cones
Retinal cells that respond to higher levels of light and result in color perception. (page 173)
Convergence
A cue of binocular depth perception; when a person views a nearby object, the eye muscles turn the eyes inward. (page 183)
Difference threshold
The minimum amount of change required for a person to detect a difference between two stimuli. (page 168)
Eardrum
A thin membrane that marks the beginning of the middle ear; sound waves cause it to vibrate. (page 189)
Fovea
The center of the retina, where cones are densely packed. (page 173)
Gustation
The sense of taste. (page 194)
Haptic sense
The sense of touch. (page 199)
Kinesthetic sense
Perception of the positions in space and movements of our bodies and our limbs. (page 199)
Monocular depth cues
Cues of depth perception that are available to each eye alone. (page 182)
Object constancy
Correctly perceiving objects as constant in their shape, size, color, and lightness, despite raw sensory data that could mislead perception. (page 186)
Olfaction
The sense of smell. (page 197)
Olfactory bulb
The brain center for smell, located below the frontal lobes. (page 198)
Olfactory epithelium
A thin layer of tissue, within the nasal cavity, that contains the receptors for smell. (page 197)
Perception
The processing, organization, and interpretation of sensory signals. (page 164)
Place coding
A mechanism for encoding high-frequency auditory stimuli in which the frequency of the sound wave is encoded by the location of the hair cells along the basilar membrane. (page 192)
Retina
The thin inner surface of the back of the eyeball; it contains the sensory receptors that transduce light into neural signals. (page 173)
Rods
Retinal cells that respond to low levels of light and result in black-and-white perception. (page 173)
Sensation
The detection of external stimuli and the transmission of this information to the brain. (page 164)
Sensory adaptation
A decrease in sensitivity to a constant level of stimulation. (page 169)
Signal detection theory (SDT)
A theory of perception based on the idea that the detection of a stimulus requires a judgment – it is not an all-or-nothing process. (page 168)
Sound wave
A pattern of changes in air pressure during a period of time; it produces the percept of a sound. (page 188)
Taste buds
Sensory organs in the mouth that contain the receptors for taste. (page 194)
Temporal coding
A mechanism for encoding low-frequency auditory stimuli in which the firing rates of cochlear hair cells match the frequency of the sound wave. (page 192)
Top-down processing
How knowledge, expectations, or past experiences shape the interpretation of sensory information. (page 164)
Transduction
The process by which sensory stimuli are converted to signals the brain can interpret. (page 165)
Vestibular sense
Perception of balance determined by receptors in the inner ear. (page 189)
Term
Description
Acquisition
The gradual formation of an association between the conditioned and unconditioned stimuli. (page 214)
Associative learning
Linking two stimuli, or events, that occur together. (page 209)
Behavior modification
The use of operant-conditioning techniques to eliminate unwanted behaviors and replace them with desirable ones. (page 233)
Classical conditioning (Pavlovian conditioning)
A type of associative learning in which a neutral stimulus comes to elicit a response when it is associated with a stimulus that already produces that response. (page 210)
Cognitive map
A visual/spatial mental representation of an environment. (page 236)
Conditioned response (CR)
A response to a conditioned stimulus; a response that has been learned. (page 212)
Conditioned stimulus (CS)
A stimulus that elicits a response only after learning has taken place. (page 212)
Continuous reinforcement
A type of learning in which behavior is reinforced each time it occurs. (page 230)
Extinction
A process in which the conditioned response is weakened when the conditioned stimulus is repeated without the unconditioned stimulus. (page 216)
Fear conditioning
A type of classical conditioning that turns neutral stimuli into feared stimuli. (page 221)
Habituation
A decrease in behavioral response after repeated exposure to a stimulus. (page 209)
Latent learning
Learning that takes place in the absence of reinforcement. (page 237)
Law of effect
Thorndike’s general theory of learning: Any behavior that leads to a “satisfying state of affairs” is likely to occur again, and any behavior that leads to an “annoying state of affairs” is less likely to occur again. (page 225)
Learning
A relatively enduring change in behavior, resulting from experience. (page 208)
Mirror neurons
Neurons in the brain that are activated when one observes another individual engage in an action and when one performs a similar action. (page 244)
Modeling
The imitation of observed behavior. (page 239)
Negative punishment
The removal of a stimulus to decrease the probability of a behavior’s recurring. (page 231)
Negative reinforcement
The removal of an unpleasant stimulus to increase the probability of a behavior’s being repeated. (page 229)
Nonassociative learning
Responding after repeated exposure to a single stimulus, or event. (page 209)
Observational learning
Acquiring or changing a behavior after exposure to another individual performing that behavior. (page 209)
Operant conditioning (instrumental conditioning)
A learning process in which the consequences of an action determine the likelihood that it will be performed in the future. (page 224)
Partial reinforcement
A type of learning in which behavior is reinforced intermittently. (page 230)
Partial-reinforcement extinction effect
The greater persistence of behavior under partial reinforcement than under continuous reinforcement. (page 231)
Phobia
An acquired fear that is out of proportion to the real threat of an object or of a situation. (page 221)
Positive punishment
The administration of a stimulus to decrease the probability of a behavior’s recurring. (page 231)
Positive reinforcement
The administration of a stimulus to increase the probability of a behavior’s being repeated. (page 229)
Reinforcer
A stimulus that follows a response and increases the likelihood that the response will be repeated. (page 226)
Rescorla-Wagner model
A cognitive model of classical conditioning; it holds that learning is determined by the extent to which a US is unexpected or surprising. (page 218)
Sensitization
An increase in behavioral response after exposure to a stimulus. (page 210)
Shaping
A process of operant conditioning; it involves reinforcing behaviors that are increasingly similar to the desired behavior. (page 227)
Spontaneous recovery
A process in which a previously extinguished conditioned response reemerges after the presentation of the conditioned stimulus. (page 216)
Stimulus discrimination
A differentiation between two similar stimuli when only one of them is consistently associated with the unconditioned stimulus. (page 215)
Stimulus generalization
Learning that occurs when stimuli that are similar but not identical to the conditioned stimulus produce the conditioned response. (page 215)
Unconditioned response (UR)
A response that does not have to be learned, such as a reflex. (page 212)
Unconditioned stimulus (US)
A stimulus that elicits a response, such as a reflex, without any prior learning. (page 212)
Vicarious learning
Learning the consequences of an action by watching others being rewarded or punished for performing the action. (page 241)
Term
Description
Absentmindedness
The inattentive or shallow encoding of events. (page 275)
Amnesia
A deficit in long-term memory – resulting from disease, brain injury, or psychological trauma – in which the individual loses the ability to retrieve vast quantities of information. (page 276)
Anterograde amnesia
A condition in which people lose the ability to form new memories. (page 276)
Blocking
The temporary inability to remember something. (page 274)
Chunking
Organizing information into meaningful units to make it easier to remember. (page 259)
Consolidation
The neural process by which encoded information becomes stored in memory. (page 250)