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first exam
first exam cards
104
Psychology
Undergraduate 1
12/15/2009

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Term
With respect to the distinction between the mind and the body, what did monists believe?
Definition
What did dualists believe?Monist: The mind is a consequence wholly of the physical nature of the brain. Dualist: There is a nonphysical component to the mind, qualia, which prevents perfect description of the nature of the mind.
Term
What is a theory?
Definition
organized set of principles that describes, predicts, and explains a phenomenon. (ex: blockage from goal produces frustration)
Term
What are characteristics of a good theory?
Definition
Precise, coherent, falsifiable, parsimonious, generative
Term
What is descriptive research?
Definition
Observe studies (ethnography): beginning of studies before hypothesis is made
Term
What are types of descriptive research?
Definition
Case studies: in depth look at individual Archival Analyses: using former records and comparing data
Term
What are the major advantages of descriptive research?
Definition
Good first step, real world, rare behaviors
Term
What are the major disadvantages of descriptive research?
Definition
Observer bias, observer effects, no causality, no understanding of process (why/why not)
Term
What is a correlation statistic?
Definition
Quantifies the relationship between two variables (r=?)
Term
What does it mean if a correlation is positive? Negative? What does it mean if a correlation statistic reveals no relationship between two variables?
Definition
Valence-Positive: r=0-1 (all points move bottom left to upper right on graph) Negative: r=-1-0 (all points move upper left to bottom right on graph)No relationships (all points have no relation, points are random on graph)
Term
What does it mean if a correlation is strong? Weak?
Definition
Closer to 1 or -1, the stronger the relationship Consistency related to two how variables are to each other Perfect predictionx and y increase the same
Term
Why doesn’t a strong positive correlation statistic between two variables tell you anything about causality between those variables?
Definition
Correlation only shows relationship it does’nt show cause and effect
Term
What is an experiment?
Definition
researchers manipulate one source of influence while holding others constant
Term
What is in independent variable (“IV”)?
Definition
Manipulated, what is causing differences, “levels”
Term
What is a dependent variable (“DV”)?
Definition
Measured by the experimenter, what we think is being affected by IV
Term
What is internal validity?
Definition
extent to which you know changing IV affects DV
Term
What is a confound?
Definition
Something that changes your variable not being tested, can mess up validity of a test
Term
How can a researcher maximize internal validity of a study?
Definition
Random selection, Random assignments to groups no bias, equal data, Double-blindno knowledge to impact data, AGE, IQ, LIFE-STYLE MATTERS
Term
What is external validity?
Definition
The extent to which the findings of your study are generalizable
Term
Why is there often a tension between internal and external validity in experiments?
Definition
Allows casual conditions but is often low external validity
Term
What is an Institutional Review Board?
Definition
committee that has been formally designated to approve, monitor, and review biomedical and behavioral research involving humans with the aim to protect the rights and welfare of the research subjects
Term
What is informed consent and when do you have to have it?
Definition
Informs of all risk, withdraw without penalty, not necessarily needed in public places
Term
What is a debriefing and what should be included?
Definition
reveal any deception, reason for deception, reveal hypothesis
Term
What does it mean that there is a “statistically significant difference” between two variables?
Definition
95% chance that groups differences are shown by the difference, 5% chance differences occurred by chance
Term
What is the “file drawer effect”?
Definition
refers to the practice of researchers filing away studies with negative outcomes. Negative outcome refers to finding nothing of statistical significance or causal consequence, not to finding that something affects us negatively
Term
What is a gene?
Definition
Cells: nucleus 46 chromosomes pairsdna strands genes
Term
*What is a chromosome?
Definition
what multiplies to form cells after conception, is made up of dna strands
Term
*How many chromosomes do human beings have?
Definition
46
Term
*What sex chromosomes does a female have?
Definition
What sex chromosomes does a male have? Female- XX Male-XY
Term
*What is a genotype?
Definition
What is a phenotype? Genotype- internally coded, inheritable information carried by all living organisms. Phenotype- outward, physical manifestation of the organism
Term
What is the study of behavioral genetics?
Definition
Studying the extent to which individual differs and environment differs
Term
*What is a mutation?
Definition
A mutation is a permanent change in the DNA sequence of a gene. Mutations in a gene's DNA sequence can alter the amino acid sequence of the protein encoded by the gene.
Term
What percentage of genes do monozygotic (MZ) twins share? Why? In other words, what is the process that occurs that results in them sharing the percentage of genes that they share?
Definition
Two siblings who result from one zygote splitting into two and therefore share the same genes-100%
Term
What percentage of genes to dizygotic (DZ) twins share? Why? In other words, what is the process that occurs that results in them sharing the percentage of genes that they share?
Definition
Twin siblings who result from two separately fertilized eggs- 50%
Term
What percentage of genes, on average, do full biological siblings share? Why is this average?
Definition
50%
Term
What percentage of genes does an individual share with one biological parent?
Definition
50% from each parent
Term
What does it mean that siblings share an environment?
Definition
same house, parents, SES
Term
What does it mean that siblings have an uncommon, or unshared, environment?
Definition
same house diff treatment, diff peers, diff teachers and treatment
Term
What is a family study?
Definition
find genetics sharing amount
Term
What is a twin study?
Definition
MZ twins & DZ twins
Term
What is an adoption study?
Definition
include two sets of factors that may account for differences in behavior, personality, and psychopathology: biological parents and environmental parents
Term
*What is heredity?
Definition
Transmission of characteristics from parents
Term
What is heritability? What does a heritability coefficient tell you? What doesn’t it tell you with respect to explaining variation on a trait?
Definition
extent to which people’s differences on a trait are due to their differences in genotypes/percent of variation/doesn’t tell you about specific genes (polygenic traits)
Term
Why does heritability increase when environmental variation decreases?
Definition
the extent to which your parents influences increases
Term
Who is more similar – MZ twins reared together, or MZ twins reared apart? Why?
Definition
MZ raised apart are more similar due to genetic personality traits
Term
What is an active interaction?
Definition
particular genotype will increase likelihood of someone seeking particular environment
Term
What is a passive interaction?
Definition
more likely to inherit an environment that facilitates gene expression because of parents
Term
What is a re-active interaction?
Definition
particular gene creates behavior/ appearance that elicits behavior from others that further enhances certain characteristics
Term
*What is knockout mouse?
Definition
genetically engineered mouse in which one or more genes have been turned off through a gene knockout.
Term
What is a neuron?
Definition
excitable cell in the nervous system that processes and transmits information by electrochemical signaling.
Term
What are the three types of neurons?
Definition
Sensory (detect sensory info and send it to the brain), motor (receive info from the brain), Interneuron (communicate between sensory and motor neurons)
Term
What is a dendrite and what is its role in an action potential?
Definition
Receive excitatory message, sends message to soma
Term
What is a cell body and what is its role in an action potential?
Definition
Action potential is when the neuron fires, and a cell body holds all of the general parts of a cell as well as the nucleus and it is what is being fired
Term
What is an axon and what is its role in an action potential?
Definition
An axon is long, slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body or soma, and it is what the ‘fire’ is traveling through.
Term
What roles do sodium and potassium ions play in an action potential?
Definition
They change the ion charge from negative to positive for it to charge.
Term
What are the terminal buttons and what is their role in an action potential?
Definition
end of dendrites that release the neuron
Term
What is a synapse and what is its role in an action potential?
Definition
The space in between the terminal buttons and the axon terminals
Term
What is a myelin sheath, nodes of Ranvier, and how do they affect an action potential?
Definition
Myelin sheath- makes neurons fire faster by allowing charge to jump to the nodes (connecting pieces of axons)
Term
What is the resting potential, in microvolts, of a neuron?
Definition
-70 mV
Term
When a neuron depolarizes, how does the charge of the neuron change?
Definition
+40 mV
Term
What is an excitatory message? What is an inhibitory message?
Definition
Excitatory- depolarize (fire) Inhibitory: hyperpolarize (doesn’t fire)
Term
What is the all-or-none principle?
Definition
Either a neuron fires, or it doesn’t. There’s no partial firing
Term
How can you measure the strength of a neural signal?
Definition
The speed and frequency of the firing
Term
What is a neurotransmitter?
Definition
Chemical substances that carry messages from neurons to other neurons, muscles, or glands
Term
What are the three ways that a neurotransmitter’s presence in the synapse can be reduced?
Definition
Autoreceptor (releasing channel on terminal button, tells to stop receiving neuron), Enzyme deactivation (enzyme that breaks down neurotransmitter), Reuptake (sucks neurotransmitter back in)
Term
What is acetylcholine and what mental functions is it associated with?
Definition
Acetylcholine (Ach): complex mental processes or memory and deals with motor control
Term
What is dopamine? How is dopamine related to Parkinson’s Disease?
Definition
High levels- pleasure, euphoria, reward. Controls volunary muscle movements, ^loses control of that.
Term
What is serotonin? How do serotonin-specific reuptake inhibitors (SSRIs) treat disorders like depression and anxiety?
Definition
SSRI’s- serotonin specific reuptake inhibitors- causes the overfired anxiety/depression neuron to be sucked back up as if it wasn’t there; establishes balance. Ecstasy results in pleasure, contentment, social connection and empathy.
Term
What is epinephrine? What is norepinephrine?
Definition
Adrenalin, heightened vigilance, arousal, fight or flight.
Term
What is GABA?
Definition
Inhibitory receptors (downer)
Term
What is glutamate?
Definition
Excitatory (upper)
Term
What are endorphins?
Definition
Pain relief, short for endogenous morphines, produces a sense of well being.
Term
What is Substance P?
Definition
released from the terminals of specific sensory nerves, it is found in the brain and spinal cord, and is associated with inflammatory processes and pain.
Term
What are agonists?
Definition
Increase neurotransmitter release, activate receptors, block neurotransmitter clearance.
Term
What are antagonists?
Definition
Decrease neurotransmitter release, block receptor site
Term
Who was Phineas Gage?
Definition
What did scientists learn about the brain based on the case of Phineas Gage? Man with iron piece that went through his head, proved parts of brain control things (such as his personality and ability to think before he speaks)
Term
What is phrenology?
Definition
based on the concept that the brain is the organ of the mind, and that certain brain areas have localized, specific functions or modules
Term
What is Broca’s area?
Definition
In which side (left or right) of the brain is it located? Area of the brain responsible for speech production, on both sides
Term
Which side of the brain controls the left side of the body? The right side?
Definition
Left side of brain controls right side of body, right side controls left
Term
What parts of the brain comprise the brainstem and what functions do they serve?
Definition
Reticular formation (sleep arousal attention), medulla ablongata (vital involuntary functions like breathing), pons (sleep and arousal), cerebellum(motor coordination and learning motor coordination), hypothalamus (body temperature, blood pressure, glucose level, thirst, hunger, aggression, lust)
Term
What is the cerebellum and what function does it serve?
Definition
cerebellum(motor coordination and learning motor coordination
Term
What is the hypothalamus?
Definition
hypothalamus (body temperature, blood pressure, glucose level, thirst, hunger, aggression, lust)
Term
What is the thalamus?
Definition
between the cerebral cortex and the midbrain. sensation, special sense and motor signals to the cerebral cortex, along with the regulation of consciousness, sleep and alertness
Term
What is the hippocampus?
Definition
Long term memory and spatial navigation
Term
What is the amygdala?
Definition
regulates fear, adrenaline rush frontal lobe
Term
What is the basal ganglia?
Definition
Motor control and learning
Term
What is the cerebral cortex?
Definition
memory, attention, perceptual awareness, thought, language, and consciousness
Term
What is the corpus collosum?
Definition
bundle of axons which connects two hemispheres.
Term
What is the occipital lobe?
Definition
associated with visual processing
Term
What is the parietal lobe?
Definition
associated with movement, orientation, recognition, perception of stimuli
Term
What is hemineglect?
Definition
the inability to pay attention to or notice stimuli from one-half of the visual field (i.e., the right or left side of a scene or object) even though more basic visual field abilities are intact
Term
What are the temporal lobes?
Definition
associated with perception and recognition of auditory stimuli, memory, and speech
Term
What are the frontal lobes?
Definition
associated with reasoning, planning, parts of speech, movement, emotions, and problem solving
Term
What is the prefrontal cortex?
Definition
planning complex cognitive behaviors, personality expression, decision making and moderating correct social behavior.
Term
What is the central nervous system?
Definition
functions to coordinate the activity of all parts of the bodies of multicellular organisms
Term
What is the peripheral nervous system?
Definition
sensory and motor neurons
Term
What is the somatic nervous system?
Definition
voluntary muscles and reflexes
Term
What is the autonomic nervous system?
Definition
visceral/smooth and cardiac muscle
Term
What does the sympathetic division of the ANS do?
Definition
increases energy expenditure- prepares for action
Term
What does the parasympathetic division of the ANS do?
Definition
decreases energy expenditure-gains stored energy
Term
What is plasticity?
Definition
when an area of the brain is damaged and non-functional, another area may take over some of the function.
Term
What does the phrase “fire together, wire together” mean?
Definition
The theory is commonly evoked to explain some types of associative learning in which simultaneous activation of cells leads to pronounced increases in synaptic strength
Term
What do Ramachandran’s patients’ experiences with phantom limb syndrome reveal about brain changes?
Definition
the same as plasticity, in that the brain doesn’t feel the limb there (doesn’t send any neurons) so it assigns another part of the body to feel that ‘phantom limb’.
Term
Whose brains are larger – men or women’s?
Definition
mens
Term
With respect to language areas, how do men and women’s brains differ?
Definition
Many behavioral differences have been reported for men and women. For example, it has been said that women are better in certain language abilities and men are better in certain spatial abilities
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