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142 Cards in this Set

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  • Back

nativists

emphasized genes and inborn characteristics of human behavior
empiricists
focused on learning and experience as an explanation for human behavior
evolutionary psychology
a field of psychology emphasizing evolutionary mechanisms that may help explain human commonalities in cognition, development, emotion, social practices, and other areas of behavior
behavioral genetics
an interdisciplinary field of study concerned with the genetic bases of behavior and personality
set-point theory
the genetically influenced weight range for an individual , thought to be maintained by a biological mechanism that regulates food intake, fat reserves, and metabolism
genes
the functional units of heredity; they are composed of DNA and specify the structure of proteins
chromosomes
within every body cell, rod-shaped structures that carry the genes
DNA
The chromosomal molecule that transfers genetic characteristics by way of coded instructions for the structure of proteins
genome
the full set of genes in each cell of an organism
linkage studies
studies that look for patterns of inheritance of genetic markers in large families in which a particular condition is common
genetic markers
a segment of DNA that varies among individuals, has a known location on a chromosome, and can function as a genetic landmark for a gene involved in a physical or mental condition
evolutionary psychology
a change in gene frequencies within a population over many generations; a mechanism by which genetically influence characteristics of a population may change
mutate
when an error occurs in the copying of the original DNA sequence, resulting in spontaneous changes in the genes
natural selection
the evolutionary process in which individuals with genetically influenced traits that are adaptive in a particular environment tend to survive and reproduce in greater numbers than other individuals; as a result, their traits become more common in the population
Charles Darwin
British naturalist who wrote on the origin of species and asserted that thee fate of genetic variations depended on the environment
reflexes
simple, automatic responses to specific stimuli
practice play
teaches children how to get along with others and gives them a chance to practice their motor and linguistic skills
sensation
the detection of physical energy emitted or reflected by physical objects; it occurs when energy in the external environment or the body stimulates receptors in the sense organs
perception
the process by which the brain organizes and interprets sensory information
feature-detector cells
cells that process special features of the visual world within the brain
visual cliff
a test used to understand an infant's perception of depth
neurocultural theory of emotion
emphasizes that two factors are involved in emotional expression; universal neurophysiology in facial muscles associated with certain emotions, and culture-specific variations in the expression of emotion
synchrony
the adjustment of one person's nonverbal behavior to coordinate with another's
attachment
a deep emotional tie to caregivers
contact comfort
the pleasure of being touched and held; the basis of an infant's first attachment
language
a system that combines meaningless elements such as sounds and gestures to form structured utterances that convey meaning
surface structure
the form in which a sentence is spoken or signed
deep structure
the meaning of a sentence which is spoken or signed
syntax
rules of grammar
language acquisition device
an innate mental module that facilitates the young child's development of language
critical period
a make or break period in which children must be exposed to language and must have opportunities to practice their emerging linguistic
psycholinguists
researchers who study the psychology of language
universal grammar
the brain is disposed to notice the core features common to all languages
over regularizations
when a child reduces a sentence to their own two-word sentence
sociobiology
an interdisciplinary field that emphasizes evolutionary explanations of social behavior in animals, including human beings
heritability
a statistical estimate of the proportion of the total variance in some trait that is attributable to genetic differences among individuals within a group
monozygotic twins
twins that develop when a fertilized egg divides into two parts that develop into separate embryos
dizygotic twins
twins that develop from two separate eggs fertilized by separate sperm; they are no more alike genetically than are any other pair of siblings
intelligence quotient
a measure of intelligence originally computed by dividing a person's mental age by his or her chronological age and multiplying the result by 100; it is now derived from norms provided for standardized intelligence tests
temperament
a characteristic of an individual, describing a habitual way of behaving, thinking, and feeling
factor analysis
a statistical method for analyzing the intercorrelations among different measures or test scores' clusters of measures of scores that are highly correlated are assumed to measure the same underlying trait or ability
big five personality traits
a small cluster of personality traits that remain stable over a person's lifetime; these have also been identified all over the world.
central nervous system
the portion of the nervous system consisting of the brain and the spinal cord
spinal cord
a collection of neurons and supportive tissue running from the base of the brain down the center of the back, protected by the spinal column
peripheral nervous system
all portions of the nervous system outside the brain and spinal cord; it includes sensory and motor nerves
sensory nerves
carries messages from special receptors in the skin, muscles, and other internal and external sense organs to the spinal cord
motor nerves
carries orders from the central nervous system to muscles, glands, and internal organs
somatic nervous system
the subdivision of the peripheral nervous system that connects to sensory receptors and to skeletal muscles; sometimes called the skeletal nervous system
autonomic nervous system
the subdivision of the peripheral nervous system that regulates the internal organs and glands
biofeedback
a method for learning to control bodily functions, including ones usually thought to be involuntary, by attending to feedback from an instrument that monitors the function and that signals changes in it
sympathetic nervous system
the subdivision of the autonomic nervous system that mobilizes bodily resources and increases the output of energy during emotion and stress
parasympathetic nervous system
the subdivision of the autonomic nervous system that operators during relaxed states and that conserves energy
neuron
nerve cells
glial cells
nervous system cells that aid the neurons by providing them with nutrients, insulating them, and removing cellular debris when they die
dendrites
a neuron's branches that receive information from other neurons and transmit it toward the cell body
cell body
the part of the neuron that keeps it alive and determines whether it will fire
axon
a neuron's extending fiber that conducts impulses away from the cell body and transmits them to other neurons
axon terminals
the axon's end branches
myelin sheath
a fatty insulation that may surround the axon of a neuron
nerve
a bundle of nerve fibers in the peripheral nervous system
neurgenesis
when immature cells (precursor cells) give birth to new neurons
synaptic cleft
where the axon terminal of one neuron nearly touches a dendrite or cell body of another
synapse
the site where a nerve impulse is transmitted from one nerve cell to another; it includes the axon terminal, the synaptic cleft, and receptor sites in the membrane of the receiving cell
plasticity
the term referring to the brain's flexibility
action potential
a brief change in electrical voltage which produces an electric current or impulse
synaptic vesicles
tiny sacs in the tip of the axon terminal
neurotransmitter
a chemical substance that is released by a transmitting neuron at the synapse and that alters the activity of the receiving neuron
receptor sites
special molecules in the membrane of the receiving neuron
excitatory
a voltage shift in a positive direction
inhibitory
a voltage shift in a negative direction
all-or-none principle
a neuron either fires or it doesn't
serotonin
a neurotransmitter that affects neurons involved in sleep, appetite, sensory perception, temperature regulation, pain suppression, and mood
dopamine
a neurotransmitter that affects neurons involved in voluntary movement, learning, memory, and emotion
acetylcholine
a neurotransmitter that affects neurons involved in muscle action, cognitive functioning, memory, and emotion
Norepinephrine
neurons involved in increased heart rate and the slowing of intestinal activity during stress, and neurons involved in learning, memory, dreaming, waking from sleep, and emotion
GABA
functions as the major inhibitory neurotransmitter in the brain
Glutamate
functions as an important excitatory neurotransmitter in the brain and plays a critical role in long-term memory
Alzheimer's disease
a devastating condition that leads to memory loss, personality changes, and eventually disintegration of all physical and mental abilities
Parkinson's disease
a condition characterized by tremors, muscular spasms, and increasing muscular rigidity
blood-brain barrier
a system of densely packed capillary and glial cells whose function is to prevent potentially harmful substances from entering the brain
endorphins
chemical substances in the nervous system that are similar in structure and action to opiates; they are involved in pain reduction, pleasure, and memory, and are known technically as endogenous opiod peptides
neuromodulators
some endorphins which alter the effects of neurotransmitters
hormones
chemical substances, secreted by organs called glands, that affect the functioning of other organs
endocrine glands
internal organs that produce hormones and release them into the bloodstream
adrenal hormones
hormones that are produced by the adrenal glands and that are involved in emotions and stress; they include cortisol, epinephrine and norepinephrine
cortisol
an adrenal hormone that increases blood-sugar levels and boosts energy which is produced in the outer part of the adrenal gland
epinephrine
an adrenal hormone that is popularly known as adrenaline, produced in the inner part of the adrenal gland
norepinephrine
an adrenal hormone produced in the inner part of the adrenal gland
melatonin
a hormone secreted by the pineal gland, that is involved in the regulation of daily biological rhythms
biological rhythm
a periodic, more or less regular fluctuation in a biological system; it may or may not have psychological implications
circadian rhythm
a biological rhythm with a period of about 24 hours
suprachiasmatic nucleus
an area of the brain containing a biological clock that governs circadian rhythms
sex hormones
hormones that regulate the development and functioning of reproductive organs and that stimulate the development of male and female sexual characteristics; they include androgens, estrogens, and progesterone
androgens
masculinizing hormones
estrogen
feminizing hormones
progesterone
contributes to the growth and development of the uterine lining in preparation for a fertilized egg
lesion method
damaging or removing sections of the brains of animals, then observing the effects
electrodes
devices that detect the electrical activity or millions of neurons in particular regions of the brain and are widely used in research and medical diagnosis
electroencephalogram
a recording of neural activity detected by electrodes
positron-emission tomography
a method of analyzing biochemical activity in the brain, using injections of a glucose-like substance containing a radioactive element
magnetic resonance imaging
a method for studying body and brain tissue. Using magnetic fields and special radio receivers
localization of function
specialization of particular brain areas for particular functions
brain stem
the part of the brain at the top of the spinal cord, consisting of the medulla and the Pons
medulla
a structure in the brain stem responsible for certain autonomic functions, such as breathing and heart rate
Pons
a structure in the brain stem involved in, among other things, sleeping, waking, and dreaming
reticular activating system
a dense network of neurons found in the core of the brain stem; it arouses the cortex and screens incoming information
cerebellum
a brain structure that regulates movement and balance, and that is involved in the learning of certain kinds of simple responses
thalamus
a brain structure that relates motor impulses to the spinal cord and sensory messages to the cerebral cortex
olfactory bulb
the private switching station for the sense of smell
hypothalamus
a brain structure involved in emotions and drives vital to survival, such as fear, hunger, thirst, and reproduction; it regulates the autonomic nervous system
pituitary glands
a small endocrine gland at the base of the brain, which releases many hormones and regulates other endocrine glands
limbic system
a group of brain areas involved in emotional reactions and motivated behavior
amygdale
a brain structure involved in the arousal and regulation of emotion, particularly fear, and the initial emotional response to sensory information
hippocampus
a brain structure involved in the storage of new information in memory
cerebrum
the largest brain structure, consisting of the upper part of the brain; it is in charge of most sensory, motor, and cognitive processes
cerebral hemispheres
the two halves of the cerebrum
corpus callosum
the bundle of nerve fibers connecting the two cerebral hemispheres
lateralization
specialization of the two cerebral hemispheres for particular operations
cerebral cortex
a collection of several thin layers of cells covering the cerebrum; it is largely responsible for higher mental functions
occipital lobes
lobes at the lower back part of the brain's cerebral cortex; they contain areas that receive visual information
visual cortex
where visual signals are processed
parietal lobes
lobes at the top of the brain's cerebral cortex; they contain areas that receive information on pressure, pain, touch, and temperature
somatosensory cortex
an area that receives information on pressure, pain, touch, and temperature
temporal lobes
lobes at the sides of the cerebral cortex, just above the ears; they contain areas involved in hearing, memory, perception, emotion, and language comprehension
auditory cortex
an area where sounds are processed
wernicke's area
an area of the left temporal lobe involved in language comprehension
frontal lobes
lobes at the front of the brain's cerebral cortex; they contain areas involved in short-term memory, higher-order thinking, initiative, social judgment and speech production
motor cortex
an area that issues order to 600 muscles of the body that produce voluntary movement
broca's area
an area involved in speech production
association cortex
areas of the brain that are silent when stimulated, but are involved in higher mental processes
prefrontal cortex
the forward most part of the frontal lobes involved in personality
split-brain surgery
the process of cutting the corpus callosum to reduce or eliminate seizures in epileptic patients
hemispheric dominance
a term for when one brain hemisphere is more active during specified tasks than another
long-term potentiation
a long-lasting increase in the strength of synaptic responsiveness, thought to be a biological mechanisms of long-term memory
declarative memories
memories of facts and events
procedural memories
memories for skills and habits
rapid eye movement sleep
sleep periods characterized by quick eye movements, loss of muscle, tone, and dreaming
non-REM sleep
sleep periods of fewer eye movements
alpha waves
brain waves that have a regular, slow rhythm and a high amplitude
delta waves
very slow brain waves with high peaks
sleep spindles
short bursts of rapid, high-peaking brain waves
activation-synthesis theory
the theory that dreaming results from the cortical synthesis and interpretation of neural signals triggered by activity in the lower part of the brain