All Terms For Phyc/Soc (5/26) Flashcards
1 Cofounding variable
A variable that affects both the independent and dependent variable
EX) coffee drinkers are more common to develop heart disease. BUT, those coffee drinkers also smoked and thats what made the heart disease prevalent
1 A mediating variable
A variable that explains the relationship between an independent and dependent variable
EX) people who have lower income experience cancer more frequently. The cancer does not check to see if someone has lower income first. So, scare food, lack of health care, explain why cancer is more popular in these populations
1 A moderating variable
A variable that is a step between the relationship between independent and dependent
EX) People who have a stressful job tend to have anxiety. A moderating variable would be exercise or other healthy mechanisms to cope with the stress
1 Experimental Studies
the researchers directly manipulate an independent variable
1 Observational studies
Researchers carefully analyze pre-existing patterns of variation to obtain information on significant relationships
1 Quantitative measures
Uses numbers to measure
1 Qualitative measures
uses verbal or open-ended measures
1 Cohort studies
Groups are organized based on a characteristic that is common
EX) age, gender
1 Prospective analysis
Data is gathered moving forward
1 Retrospective studies
Data is gathered looking back
1 Internal validity
The extent to which we can draw causal conclusions from the study data. Did we manipulate the independent variable enough so that it changed the dependent?
1 External validity
Extent to which we can generalize our results onto different experimental or life situations
1 Test validity
Describes how well research design was able to test what it was intended to test
1 Subtypes of test validity
Construct validity
Content validity- covers the full scope
Criterion validity
Predictive validity
1 Reliability
Consistency
1 Accuracy
How close to the actual/real measurements
1 Self-reporting/ response bias
Allowing respondents to chose their own answers on a survey
1 Social diserability
Respondents answer in a way that makes them look more socially successful
1 Acquiescence bias
The tendency for a respondent to answer yes when they are asked a question
2 Instinctual behaviors
Animals do not attend school, have symbolic culture, use language or many of these hard-coded behaviors shaped by genetics
2 Epigenetics
Changes to the genome that do not involve changing actual nucleotide content
EX) methylation
2 Pregnancy stages
First- major structures of fetus are formed
Second- details get filled in and the fetus grows
Third- involves growing and finalizing preparations for the outside world
2 The Moro reflex
startle reflex that occurs in response to sudden movement or loud sounds
2 Babinski reflex
unhealthy- baby’s foot is stroked and the big toe bends up and others toes fan out
2 Puberty
Reflects the changes that happen during adolescence (between child and adult)
2 Secondary sex characteristics
Develop during puberty
2 Telomeres and aging
They deteriorate. They usually protect them from losing nucleotides from DNA
2 Direct hormones of the endocrine system
Cause their target cells to make direct changes in some physiological function
2 Tropic hormones of the endocrine system
Cause other hormones to be released
2 Role of hypothalamus
converting input from the NS to the endocrine system
2 Role of anterior pituitary gland
Receives hypothalamic input
2 Role of posterior pituitary gland
Received hypothalamic input, but receives signals in form of neuronal rather than hormonal because it is composed of neurons itself
2 Thyroid gland and Parathyroid gland
Thyroid gland- releases thyroid hormones and this influences metabolism, but can also influence behavior
2 Adrenal glands
Adrenal cortex- secretes cortisol
Adrenal medulla- secretes epinephrine and norepinephrine (acute stress responses)
2 Oxytocin
Promotes uterine contractions during labor
Also called the cuddle hormones
2 Prolactin
Helps with lactation
2 Melatonin
Produced in the pineal gland in the brain that regulates wakefulness
2 Leptin and Ghrelin
Leptin- promotes feeling of satiety
Ghrelin- hunger
2 Sensory neurons
carry information about stimuli to the CNS for processing are known as afferent neurons
2 Motor neurons
Carry signals to react from the CNS to the target cell are know as efferent neurons as they ELICIT THE EFFECT
2 Acetylcholine
Activating muscle contraction at the NMJ
2 Glutamate
Depolarizes postsynaptic neurons and pushes them closer to action potential threshold
2 GABA
inhibitory neurotransmitter and hyper-polarizes postsynaptic neurons to push them further away from the action potential threshold
2 Dopamine
reward pathway
Loss from the substantia nigra can lead to Parkinson’s disease
2 Seratonin
Regulates mood, sleep, appetite, and GI tract
2 Endorphins
supress pain and can produce a euphoric response
2 Cerebellum
make coordinated movement happen
2 Medulla oblongata
controls autonomic functions such as breathing, heart rate, and blood pressure
2 Pons
relay station through which signals are transmitted between the cerebellum, medulla, and the rest of the brain
2 Mid brain
motor control, sleeping and waking, and temperature regulation
includes inferior and superior colliculi and substantia nigra
2 inferior and superior colliculi
helps with auditory and visual processing
2 Forebrain
Divided into the diencephalon which gives rise to the thalamus (relays sensory and motor signals), hypothalamus, pineal gland and posterior pituitary gland, and the telencephalon which gives rise to the cerebrum
2 Cerebrum
Divided into the cerebral cortex and subcortical structures-contains the olfactory bulb, basal ganglia, hypothalamus and hippocampus (part of limbic system)
2 Nucleus accumbens
involved in reward, motivation, and learning, implicated in addiction
2 Cerebral cortex
frontal lobe, parietal lobe, occipital lobe, temporal lobe
2 Wernicke’s area
Language comprehension
2 Broca’s area
language production/actually speaking
2 EEGs
measure brain activity, can be used to identify different ages of sleep, but is bad at localizing
2 CT
X-ray photos that are 2D
2 MRI
use magnetic fields to image structures in the body
2 PET
radiolabels glucose to emit positron decay
2 fMRI
uses magnetic properties between oxygenated and deoxygenated hemoglobin
3 Nociceptors
detect pain
3 baroreceptors
detect pressure, like blood pressure
3 Osmoreceptors
detect concentrations of solutes in blood and trigger responses
3 Proprioceptors
present in and around muscles, tendons, and joints
Kinesthetic sense
3 Just noticeable difference
Smallest change in magnitude of a stimulus that we can perceive as being different
3 Weber’s law
Being able to notice a difference
EX) 10 to 11 pounds or 100 to 110 is 10%
3 Hit
bear perceived, bear actually there
3 False alarm
Bear perceived, bear not actually present
3 Miss
bear not perceived, bear actually there
3 Correct rejection
bear not perceived, bear not actually present
3 Principle of proximity
we perceive objects or shapes that are close to each other as forming groups
3 Principle of similarity
states objects that are similar in some way will be perceived as belonging to a group
3 Principle of good continuation
if multiple objects intersect or overlap, we tend to perceive them as relatively few uninterrupted objects
3 Principle of Closure
We infer the presence of complete shapes over even when they are incomplete
3 Principle of symmetry
symmetrical objects are more likely to be perceived of a whole than asymmetrical objects
3 Cones
responsible for perceiving fine detail and color
3 Rods
many more rods than cone
contain rhodopsin which is a protein extremely sensitive to light
3 Pupil
lets light into the eye
3 Iris
controls size of pupil with dilator and constrictor pupillae
3 Ciliary muscle
adjusts lends via the suspensory ligaments
3 Anterior chamber
contains aqueous humor
3 Posterior chamber
contains vitreous humor
3 Choroid
supplies the retina with blood and absorbs excess light
3 Sclera
white color of the eye
3 conjunctiva
translucent film on cornea to keep eye lubricated
3 LGN
in thalamus and acts as the main relay station from the retinas and sends signals to the superior colliculus
3 Magnocellular and parvocelluar neurons
Magno- sense motion
Parvo- sense detail
3 Magnocellular and parvocelluar neurons
Magno- sense motion
Parvo- sense detail
Serial processing model
analyzing stimuli in order to find something
4 Reticular formation
and the reticular activating system play an important role in alertness
4 BATS Drink Blood
beta alpha theta: non-rem, stage 1 spindles + K-complexes- stage 2 delta beta
4 cortisol
contributes to wakefullness
4 Melatonin
generated from the pineal gland that promotes drowsiness
4 Insomnia
Sleep disorder that makes it hard to fall asleep
4 Narcolepsy
Excessive daytime sleepiness, abnormal REM sleep, hallucinations, muscle control loss
4 Sleep apnea
Trouble breathing while sleeping
4 Parasomnias
abnormal behaviors during sleep like sleepwalking (somnambulism) or nightmares
4 Manifest content
refers to the plotline and details of the dream
4 Latent content
underlying reason for having a dream
4 Activation-synthesis model
activation of neurons in REM sleep results in a synthesis of that experimental input through dreaming
4 Problem-solving theory
views dreams as a way that the brain unconsciously processes and works through problems encountered in one’s day-to-day life
4 Cognitive theory
dreams reflect cognitive structures that play a role in out everyday lives
4 Caffeine
stimulant to increase the activity of the CNS
4 Amphetamines
Stimulant. Adderall specifically, MDMA (ecstacy or molly), cocaine- blocks reuptake of serotonin and dopamine and norepi
4 Depressents
decreases activity of the CNS
4 Alcohol
Enhances GABA receptors
4 Korsakoff’s syndrome
associated with chronic alcoholism
4 benzodiazepines and barbiturates
A drug created to help with anxiety and alcoholism, but has a high risk of overdose
4 Opioids
morphine or heroin
endorphins- block pain
4 Hallucinogens
LSD
distort perceptions and enhance sensory experiences
4 Marijuana
includes stimulant, hallucinogenic, and depressant activities
4 the reward pathway
More technically known as the mesolimbic system
4 Shadowing
subjects are asked to repeat words as soon as they hear them
4 Cocktail party effect
in a room with lots of people having a conversation and someone across the room says your name and you immediately notice
4 Inattentional blindness
When working on a focused task, we miss things happening in the background
4 Change blindness
Failure to notice changes that take place between two stimuli
4 simultaneous attention
paying attention to multiple things at once
4 Sequential attention
Rapidly switching back and fourth between tasks
4 Controlled processing
When we have to consciously focus on carrying out a task
5 Stages by Piaget: 1
Sensorimotor stage
birth-2 years
sensory input by engaging in motor activities
5 Object permanence
understanding that objects exist outside of one’s perception- in other words that things don’t just go away when you stop seeing them
5 Circular reactions
the repetition of something accidentally, like dropping a toy
5 Stranger anxiety
going from being open to strangers to strangers providing a sense of worry
5 Stages by Piaget: 2
preoperational stage: 2-7
concrete operational stage: 7-11
formal operational stage: later
5 the main components of the preoperational stage
egocentrism, lack of conversation, centration, and symbolic thought
5 assimilation
EX) seeing an animal that looks like a cow and functions like one, but is brown instead of black/white
so you preserve your schema by concluding that the animal must not be a cow
5 Accommodation
expand schema by acknowledging that cows can have additional colors
5 Fluid intelligence
problem-solving skills that can be applied to new situations without using an previously existing knowledge
5 Crystallized intelligence
reflects the ability to deploy one’s knowledge and skills to solve problems
5 Algorithum
Problem-solving with fixed steps
5 Deductive reasoning
top-down: applying general principles to a specific situation
5 Inductive reasoning
Bottom up Processing: successive observations are extrapolated to identify general principles
5 Functional fixedness
only seeing objects use for what they are made for
5 Belief tendency
people’s tendency to maintain their beliefs