Psych Flashcards
Etiology
is related to causes of disease
Displacement
is a defense mechanism that shifts aggressive impulses to a less threatening target. It redirects emotion to a safer outlet or someone unrelated to the emotional situation, in order to avoid dealing directly with what is frightening or threatening. The girl yells at her roommate even though she is angry with her mother.
superego
is the part of the mind that is critical and deals with morals.
id
is the part of the mind that is concerned with primal desire
ego
mediates between the desires of the superego and the id
Maslow’s hierarchy of needs
Physiological: food water, etc
safety: a roof over your head away from predators
love/belonging: Friendships, intimacy, family
esteem: Esteem presents the typical human desire to be accepted and valued by others
self actualization: This level of need refers to what a person’s full potential is and the realization of that potential
Transtheoretical model precontemplation
Don’t even know what you are doing is wrong
Social facilitation
or the audience effect, is the tendency for people to perform differently when in the presence of others than when alone
social loafing
When a person is exerting less effort to achieve a goal when they work in a group than when they work alone
Groupthink
is the process by which a group can come to an irrational decision by disregarding evidence and minority viewpoints in cause of reaching a group consensus
prosocial behavior
Any action intended to help others
normative influence
the influence of other people that leads us to conform in order to be liked and accepted by them
confirmation bias:
the tendency to interpret new evidence as confirmation of one’s existing beliefs or theories
Collective Behavior
Refers to events that suddenly emerge. These events do not conform to rules or laws but instead are shaped based on the issue at hand large groups of people
labeling theory
is the view of deviance according to which being labeled as a “deviant” leads a person to engage in deviant behavior
Strain theories
certain strains or stressors increase the likelihood of crime
Mediator variable
it explains the relationship between the dependent variable and the independent variable
Drive theory
is based on the idea that behavior is driven by psychological needs
Learning-performance theory:
involves learning something without actually performing the behavior.
Relative deprivation
is the experience of being deprived of something to which one believes to be entitled
Social stratification
refers to a system by which a society ranks categories of people in a hierarchy. In the United States, it is perfectly clear that some groups have greater status, power, and wealth than other groups. These differences are what led to social stratification
Inattentional blindness
is the inability to recognize an unexpected object, event, or stimulus that is in ‘plain sight’
Executive attention
is involved in goal-directed behavior, monitoring conflicts between internal processes, and anticipating the effects of behavior. Dopamine from the ventral tegmental area is associated with executing attention.
Broadbent’s Early Selection Theory
Sensory register > selective filter > perceptual process(meaning) > Conscious.
Deutch & Deutch’s Late Selection Theory
Sensory register > perceptual process > selective filter > Conscious
Treisman’s Attenuation Theory
Instead of complete selective filter, have an attenuator – weakens but doesn’t eliminate input from unattended ear. Sensory register >attenuator > perceptual process > Conscious
Acronym: Triessman is SHARP as a T. He is smart enough to only attenuate and then perceive.
Information processing model
proposes our brains are similar to computers. We get input from environment, process it, and output decisions. Doesn’t describe where things happen in the brain. INPUT > PROCESS > OUTPUT. The information-processing model is a bottom-up or stimulus driven model
iconic memory
memory that you see, lasts half a second
echoic memory
What you hear, lasts 3-4 seconds
Working memory (Short –Term Memory):
is the sensory information you actually process. Consists of what you are thinking about at the moment 7 +/- 2
long-term memory:
Capacity is unlimited. 2 main categories: explicit (declarative) and implicit (non-declarative)
Explicit Memory
/Declarative are facts/events you can clearly/explicitly describe. Explicit memory is a type of long term memory that focuses on recalling previous experiences and information. Can be divided into tw categories, episodic and semantic.
semantic memory
Long term memory, and it deals with words/facts.
Episodic memory
event-related memories.
Implicit Memories /Non-Declarative:
involve things you may not articulate. Implicit memoryis a type ofmemoryin which previous experiences aid the performance of a task without conscious awareness of these previous experiences Priming is an experimental factor
Autobiographical memory
is amemorysystem consisting of episodes recollected from an individual’s life, based on a combination of episodic (personal experiences and specific objects, people and events experienced at particular time and place) and semantic (general knowledge and facts about the world)memory
Free recall
having no cues in recalling
primacy effect
better recalling first items on a list
Recency effect
recalling the last few items on a list.
serial position curve/effect
the overall tendency to recall first few items well, last few items well, and middle items not so great
Cued recall (Recall cues)
Having extra clues to remember the words. Still have to produce an answer but still get more cues to help you
flashbulb memories
Highly emotional memories that feel extremely vivid.
Retroactive interference
new learning impairs old info. Refers to later information interfering with memory for earlier information
Proactive interference
something you learned in past impairs learning in future. Earlier information interferes with later information
What type of memory is stable when you’re older?
implicit memory (aka procedural memories ex. riding a bike), and recognition memory (being able to pick something out of a list)
What type of memory improves when you age?
semantic memories improve till around age 60, so older adults have better verbal skills (they are great at crossword puzzles!). Also crystallized IQ is improved (ability to use knowledge and experience. Typically tested by analogy tests and reading comprehension). Also better at emotional reasoning.
What type of memory declines or more difficult?
episodic memories impaired, processing speed, and divided attention and prospective memory (remembering to do things in future) is decreased.
Korsakoff’s Syndrome:
Lack of vitamin B1 or thiamine. Thiamine is important for carbs to glucose for neurons. People have problems with forming new memories or recalling old ones.
Semantic Networks
Concepts are organized in your mind as connected ideas. For closely related ideas, they might be closer and longer for less closely related ideas.
Hierarchical Semantic Network
First semantic network theory suggested that we stored information in a hierarchical way. It was thought concepts were organized from higher order categories to lower order categories. We store information at the highest category possible. Broad categories/characteristics are stored at higher level nodes.
Piaget’s Stages of Development
4 stages: sensorimotor (0-2) Preoperational stage (2-6/7) concrete operational (7-11) Formal operational stage (12+)
Stage 1 of piaget
0-2 years old – Sensorimotor Stage (sensory = senses – children gather information about the world via sight, smell, taste, hearing, touch etc. + motor = active, as you develop how to use senses you learn to move your body around). Main task/awareness develops is object permanence: objects exist even if they can’t see them.
Stage 2 of piaget
2-6/7 years old (approx.) – Preoperational stage (operational = mental operations like imagining things”) - When children are going to develop/engage in pretend play. Also very egocentric only concerned about themselves
Stage 3 of Piaget
7-11 years old– Concrete operational “(operational = mental operations”. Learn idea of conservation. Two glasses one tall one short which has the most water(same amount) Also learn empathy and math skills.
Stage 4 of Piaget
12+ years old - Formal operational stage – reason abstract consequences, and reason consequences; moral reasoning.
Means-end analysis
a heuristic where we analyze main problem and break it down into smaller problems
Type I error
false positive
type II error
false negative
Robert sternburg’s theory of intelligence
3 types analytical, creative and practical(solve ill defined problems) Triarchic theory of intelligence
Fluid Intelligence
is ability to reason quickly and abstractly, such as when solving novel logic problems. Ability to think on ones feet.
Crystallized Intelligence
refers to accumulated knowledge and verbal skills.
Where is broca’s area?
Frontal lobe
Where is Wernicke’s area:
Temporal lobe
Global Aphasia
Both Broca’s Aphasia and Wernicke’s aphasia are damaged. Acronym: Globally affects language
arcuate fasciculus:
fibers that connect Wernicke’s and Broca’s
conduction aphasia:
Also called associative aphasia, ability to conduct between listening and speaking is disrupted.
split-brain patient:
When patients corpus callous is severed and you have trouble naming objects. happens when you can’t name things on your left visual field because language is on the left hemisphere.
Right hemisphere
action/perception/attention.
Linguistic Determinism
Language has an influence on thought. They are called the Weak and Strong hypothesis – referring to ho much influence they think language has on thought.
Weak Linguistic Determinism: (relativism)
language influences thought. It makes it easier/more common for us to think in certain ways based on how our language is structured
Strong Linguistic Determinism
(aka Sapir-Whorfian hypothesis): Language determines thought completely
Lexical access
refers to identifying a word and connecting it to its meaning, which has been stored in long-term memory
Semantics
association of meaning with a word
Morphology:
refers to the structure of words
Syntax:
how words are put together in sentences.
Pragmatics:
Dependences of language on context and pre-existing knowledge.
Where are emotions in the brain?
Limbic system
Structures of the limbic system
A hippo wearing a hat HAT HIPPO: Hypothalmus, amygdala, thalamus, and Hippocampus
Thalamus
sensory relay station, everything you hear/taste/etc. Senses come through your nerves and end up in thalamus, which directs them to appropriate areas in cortex, and other areas of the brain
Hippocampus
key role in forming new memories. Convert STM (Short term memory) LTM (long term memory). If destroyed, still have old memories intact, just can’t make new ones (anterograde amnesia).
Hypothalamus
(hypo – below, thalamus, tiny structure) – for limbic system, it regulates the Autonomic nervous system (ANS) - (fight or flight vs. rest and digest). Controlling endocrine system by triggers hormones like epinephrine/norepinephrine.; responsible for hunger, sleep, thirst, sex
Paul Ekman’s 6 main universal emotions:
Happiness, Sadness, Surprise, Fear, Disgust, Anger
James-Lange theory
Acronym: J/L are one (1) apart on the alphabet, so they have a physiologic response first (1st) which leads to emotion.
Cannon-Bard theory
C/B are next to each other in alphabet so it all occurs at the same time (physiologic response + emotion)
Schachter-Singer
Event> PR + Identify reason for the situation (PR) (consciously) > Emotion
Yerkes-Dodson Law
people perform best when they are moderately aroused bell shaped curve
Appraisal theory of stress
Richard Lazarus – stress arises less from physical events but more from the assessment/interpretation of those stresses/events. Appraisal.
What are the two stages of cognitive stages of stress
Primary appraisal and the secondary appraisal.
Primary appraisal
assessing stress in present situation. 3 categories of response to this primary appraisal – irrelevant, benign/positive, or stressful/negative. If primary appraisal is negative (stressful), move forward with secondary appraisal
Secondary appraisal
Evaluation of the individual’s ability to cope with the situation. What is the individual’s material preparedness to deal with stressor? Appraisal of harm, threat, and challenge (how to overcome)
Significant life changes
Signiant changes in your personal life. Ex. Death of loved one, marriage, loss of job, having children, leaving home, etc
Catastrophic events
A large scale event that everyone considers threatening. Ex. wars, natural disasters etc.
Daily hassles
Seemingly minor events/hassles of daily life Ex. long store lines, forgetting car keys, aggravating roommates, email spam, car engine burns out, finding dog poop on your carpet
Ambient stressors
Global stressors that are integrated into the environment. Perceivable, but hard to control
Which part of the brain releases cortisol(glucocorticoid):
Adrenal cortex and it is a steroid hormone.
What are Hans Selye’s distinct stages of stress (general adaptation syndrome(GAS)?
1) Alarm phase, 2) resistance 3) exhaustion
What parts of the brain receive the most amount of cortisol?
Hippocampus and frontal cortex, so that damages learning and memory (hippo) and impulse control, reasoning, judgment, planning (frontal cortex.
Lower motor neurons (LMN)
efferent neurons of the PNS synapse on control skeletal muscle. Skeletal muscle cells it contacts is the other end of the motor unit. Form a neuromuscular junction
mechanoreceptors:
position + vibration + touch, usually very quick
Chemoreceptor
Stimuli is specific chemicals, usually in the tongue, blood, nose, and tissue
Thermoreceptor:
Stimuli is heat, cold, certain food chemicals, usually in the skin(external stimuli) and hypothalamus(internal stimuli)
Photoreceptor
Stimuli is light and the location is the eyes.
What are the two divisions of Autonomic nervous system?
Sympatheic and parasympathetic.
Where does the Sympatheic nervous system begin
starts middle of sp. Cord > short axon synapses with short ganglia close to spine > second neuron goes to the target cell (smooth, cardiac, gland cells)
Where does the Parasympathetic nervous system begin:
starts at the brain stem or bottom of sp.cord > 1st neuron sends long axon > synapse with ganglion of second neuron > sends short axon to target cell
Gray matter
contains most of the neuron somas.
White matter
contains myelinated axons
Where is the grey and white matter on the spinal cord?
grey is on inside and white matter on outside
Where is the grey and white matter on the brain?
White on inside and grey on outside. Axons go down tracts of white matter.
What is the upper motor neurons and what is their flow?
Control muscles of limbs and trunk, and it controls the LMNS. It can divide into two different tracts the brainstem, or spinal cord.
corticospinal tract
Collections of axons that UMN starts in cerebral cortex, axon travels down through brainstem, and where it meets the spinal cord most of these axons cross and travel down other side until they reach LMN
corticobulbar tract
if the UMNs neurons go to the brainstem.
What are the different areas of the Cerebral cortex?
Frontal lobe, parietal lobe, occipital lobe, and temporal lobe (PUT PICTURE)
Frontal lobe:
motor cortex (body movements), prefrontal cortex (executive function, surprise/direct other areas of brain), Broca’s area (speech production)
Parietal lobe:
somatosensory cortex (touch/pressure/pain), spatial manipulation (orient in 3D)
Occipital lobe
vision, “striate cortex” (striated cells)
Temporal cortex
sound, Wernicke’s area
What are the parts of the old brain?
Brainstem, medulla and pons, thalamus, and cerebellum
Cerebellum
Coordinates movement: motor plan info is sent to cerebellum, also receives position sense information (ex. Muscle stretch fibres), and sends feedback to the cerebellum and motor areas of motor cortex
Brainstem
midbrain, pons, medulla, big role in autonomic functions, (Pavlov’s really friction mad)
Pons
part that regulates walking and relaxing (PONd, I feel relaxed when looking at a pond)
Reticular formation:
involved in motivation and alertness (Mnemonic: if you were asleep and someone tickled you then you would wake up. reTICULar formation: if you were tickled while you were asleep.
Medulla
regulated autonomic activity of heart and lungs. (imagine a olympic athlete with goal medals around her lungs and heart.)
Basal ganglia
major role in motor functions, don’t have UMNs but help motor areas to perform proper movements. Also cognition + emotion.
Thalamus
Sensory functions, because all senses have pathways that travel to the thalamus. Also higher functions of brain such as cognition and emotion.
Hypothalamus
controls the pituitary gland, the master gland that controls all other glands in body.
Glutamate
most common excitatory neurotransmitter. Reticular activating system (required for consciousness – midbrain structures) has diffuse projection of glutamate to the cerebral cortex
GABA (brain) and Glycine (spinal cord)
most common inhibitory NTs ]TWO other G’s are inhibitory]
Acetylcholine
nuclei (Basilis and septal nuclei ) in frontal lobe [frontal lobe= start so A] that releases it to cerebral cortex, Released for LMNs, and the autonomic nervous system. Helps in contracting your muscles
Histamine
from Hypothalamus sends to cerebral cortex.
NorePinephrine
area in Pons called the locus coeruleus that releases it to cerebral cortex. Also ANS, but less so than Ach.
Serotonin
Released by lots of nuclei from all over the brainstem (midbrain, pons, and medulla) called raphe nuclei to cerebral cortex release serotonin. Raphe nuclei also send serotonin to other parts of the nervous system. [Like Sex= messy. From everywhere down low (brain stem)] Low levels are related to depression.
Dopamine
VTA and substantia nigra, low levels linked to parkinson’s disease, high levels are associated with schizophrenia.
Amino acid neurotransmitters
GABA (CNS) + Glycine (PNS) + glutamate
Peptide neurotransmitters
opiods (endorphin). Perception of pain
Monoamine neurotransmitters:
Amino group and aromatic group; serotonin, histamine, dopamine, epinephrine, norepinephrine.
Endorphins
involved in blocking pain sensations and producing runners high.
CAT (Computerized Axial Tomography
X-rays to create image of the brain (tumor/abnormal swelling/bleeding…but it can’t tell us anything about what areas of the brain are active in a given time)
MRI (Magnetic Resonance Imaging)
This method uses radio waves and they are exposed to a magnetic field. The radio waves are then added to the magnetic field and disrupts orientation of atoms. As atoms move back to alignment with magnetic field they release signals and those are used to create image. This also doesn’t tell us anything about brain function either.
fMRI (functional Magnetic Resonance Imaging)
same image from MRI but can look at which structures are active! Neurons that are active require oxygen. Measuring relative amounts of oxygenated vs deoxygenated blood in the brain
PET (Positron Emission Tomography)
scans – can’t give us detail of structure, but can combine them with CAT scans and MRIs. Inject glucose into cells and see what areas of brain are more active at given point in time
Hypothalamus
regulates how much fluid in blood volume in any given time.
What are the parts on the the endocrine system:
hypothalamus, pituitary (anterior and posterior), thyroid, parathyroid, adrenal glands, gonads, pancreas.
Hypothalamus
nervous system and endocrine system connection (very small)
Thyroid
regulate body metabolism. T3/T4 The thyroid gland affects the growth and development of the brain, and regulates growth rates.
Parathyroid
4 spots back of thyroid. Regulate calcium level.
Adrenal glands
on top of kidney (adjacent to kidney): ACTH acts on adrenal cortex (steroids (fluid volume;stress resp.)- glucocortisteroids like cortisol) and medulla (catecholamine’s hormones), the adrenal gland plays a supportive role in development of muscle and bones.
Pancreas
regulates blood sugar. Not tied to pituitary gland.
How are hormones regulated
metabolism and negative feedback loops.
primary sex characteristics:
genitalia in both genders
Secondary sex characteristics
(related to sexual development but not required). Males – change in voice/growth of body hair, growth spurt. Females – breasts/hips. Both genders – pubic hair/underarm hair
What are some specific changes during puberty
Prefrontal cortex is developed during adolescence. the amygdala changes so does hypothalamus(hormones), and limbic system.
Synaptic pruning:
breaking down connections between certain neurons. Focus resources on the ones we use the most
How many genes do we have?
20,000 to 25,000
Heritability
estimates define the amount of variance that can be attributed to genes in specific subgroups of individuals. o Heritability increases in following: As environments becomes more controlled, differences in behavioral traits are tied to heritability. Secondly, more genetic variation leads to greater heritability.
epigenetics
is the study of changes in gene expression that results in something other than changes to a DNA sequence. One epigenetic change is methylation, which can make it more difficult for a gene to be expressed.
Complex behavior
combination of innate and learned behavior. Relationship between genes and environment in adaptation. Can be a spectrum, most behaviours fit between innate and learned.
Covert behavior
Covert behavior is behavior that is not observable.
Positive feedback
process that increase production of product. One product stimulates production of another product
Negative feedback
rate or process that needs to be controlled to decrease product. Ex. In our body!
Drive Reduction Theory
Drive Theory– focuses on drives vs. needs. Ex. You are at the gym and need for water. Trainer says you need to do more exercise. In this example, need: water, drive: thirst
Need
is lack or deprivation that will energize the drive, or aroused state.
drive
is the aroused state. Fulfilling the drive will reduce the need. This need-drive balance is what maintains homeostasis
Abraham Maslow’s Hierarchy of Needs
We have needs that must be fulfilled from bottom to top Please Stop liking Stupid Shit. Physiological, safety, love, self esteem, self actualization
Incentive Theory
Reward, intangible or tangible is presented after the occurrence of an action w/ intention of causing the behavior to occur again. This causes a positive association and meaning toward a behavior
Lateral Hypothalamus
(LH, acronym: One with missing LH – Lacks Hunger, so normal functioning LH controls that we start eating. You’d be skinny like an “L”). In normal conditions, LH sends positive signal to us to start eating.
Ventromedial Hypothalamus
(VMH, acronym: when one is missing- Very Much hungry, you’d be fat like a O in ventrOmedial), so when functioning properly, it signals to us to stop eating
Prolactin
is related to sexual gratification and is associated with relieving sexual arousal after an orgasm.
Oxytocin
is released after an orgasm to facilitate bonds and feelings of connectedness between sexual partners.
Attitude
A learned tendency to evaluate things in a certain way. To evaluate people, issues, events, objects