introducing pschology Flashcards
definition of psychology
the systematic study of behaviors and mental processes of individuals.
who are psychologists and what do they do?
psychologists are basic and applied distinction, they do many different psychologies
what are the 4 basic themes of psychology
empirical, unaware of causes of our own behavior, individual and group differences, and behavior is multi-caused
major psychology perspectives
behavior, cognitive, neuroscience, evolution, psychodynamic, humanistic, and sociocultural
behaviorism
helped psychology become a science, leaning principals are the same for all animals, focus on objective measurements, behaviors not inside mind, emphasizes environment and learning history instead of genetics.
people associated to behavior
Pavlov, Watson, skinner
cognitive
thoughts, memories, thoughts of perception, objectively measure (do experiments on and see results with)
neuroscience
genetic approach, regions of brain, working of neurons, role of neurotransmitters
evolution
behavior provided reproductive behavior
psychodynamic
freud, motivation of sex and aggression, influence on personality and developmental psychology
humanistic
self-actualization (what you as a person desire)
main people in humanistic approach
Abraham maslow and carl rogers
sociocultural
influence of society and culture
theories
helps guide research, broad, tested multiple times, cant be proven
hypothesis
if…then statements, testable, specific
case study
spands over long period of time, use experiments
observational studies
performed in natural settings
issues of observational studies
hard to determine causation, bias/easy to deceive
correlation
set of observations on 2 variables, defines association between 2 variables, quantitative measure
advantage of correlations
useful for prediction, correlation coefficient
disadvantage of correlation
correlation does not imply causation
what does “correlation does not imply causation” mean?
just because 2 variables get together doesn’t mean it causes.
confounding variables
not held constant across all levels(groups) if the independent variable
why does the cofounding variable matter?
because it destroys internal validity
Main effect
making a general statement about 1 variable alone, averaging across the other variables
Experimenter effect
when the experiment unintentionally creates bias in the experiment
why does the experimenter effect matter?
because it creates bias
single-blind experiment
when participants don’t know hypothesis/ what group they’re in
why does single-blind experiments matter?
because it reduces bias
interaction
when dependent variable is effected by a combination of 2 or more independent variables
multifactor study
more than 1 factor
double-blind experiment
when both researcher and participants that are unaware which group they are in
internal validity
when change in dependent variable is results of independent variable
**(most important)
external validity
when results generalize broadly to other situations/people
- operational definition
makes things applicable and measureable
random assignment
each person has equal chance of being in each level of independent variables (not the same as random sampling)
experiments
measures the effects on randomly assigned subjects
experimenter bias
when experimenter unintentionally bring bias into an experiment, destroying internal validity (one group is treated differently than other group)
single-blind experiments
participants don’t know hypothesis
double-blind experiments
experimenters and participants are “blind” to conditions
why have single-blind and double-blind experiments?
to minimize effect/ to reduce contact between experimenter and participants
what is the purpose of the Institutional Review Board (IRB)?
evaluates all research proposals before the start if the experiment.
informed consent and anonymity
participants sign form that is told about experiment
debriefing
gives participants full story after experiment
learning
relatively permanent change in performance potential brought about by experience
behaviorist perspective
best understood by environmental factors
classical conditioning
a neural object that can elicit a response through associations with another stimulus that automatically elicits a response.
example of classical conditioning
ivan pavlovs dogs
basic paradigm that occurs naturally
unconditional stimulus, unconditional response
basic paradigm that occurs with training
conditioned stimulus, conditioned response
stimulus generalization
response generalizes to similar stimuli
stimulus discrimination
lessened or no response to a somewhat different stimulus than the one that was conditioned / can differentiate between stimuli
extinction
stop pairing cs with ucs and the response will extinguish
when is extinction useful
useful if a negative emotional response (in therapy)
spontaneous recovery
pair cs with ucs again and response will return
single- trial learning
one pairing of a cs with a ucs is enough to learn to avoid food
what are the 3 food aversions
1) single- trial learning
2) delay of hours
3) smell of taste
operant conditioning
type of learning in which behavior is strengthened if followed by a reinforce or diminished if followed by a punisher
consequences
behavior from environment, will effect likelihood response in future.
reinforcement
strengthens response (influences behavior)
positive reinforcement
increase In behavior by administering a stimulus (reward)addition of a positive stimulus
negative reinforcement
increase in behavior by removing a stimulus ( still strengthens response) -removal of negative stimulus
punishment
not nice behavior and behavior decreases (reduces behavior)
positive punishment
decrease in behavior by administering a stimulus
negative punishment
decreases behavior by removing a stimulus
premack principle
more frequent behavior can reinforce less frequent behavior
contiguity
the delay for punishment
(short time) increases learning- but, life success and delay gratification
who studied operant conditioning
B.F. Skinner
2 types of punishment
conditioned for punishment to be effective and drawbacks to using punishment
shaping
an operant conditioning procedure reinforcers guide behavior toward closer and closer approximations to desired behavior (ex: clapping for girl to touch periodic table)
continuous reinforcement
operant occurs most rapidly when a reinforce is given reward right after response (ex: ATM machine or coke machine) - faster extinction
partial (intermittent) reinforcement
reinforcing a response only part of the time; results in slower acquisition of a response but greater resistance to extinction than does continuous reinforcement (ex: asking someone out, gambling)
4 main schedules of partial reinforcement
fixed-ratio
fixed-interval
variable-ratio
variable-interval
fixed-ratio
reinforcement given after set # of responses
ex: free coffee after you bought 10
fixed-interval
reinforcement given for 1st response that occurs after set period of time has elapsed.
(ex: mail, paychecks,study habits)
variable-ratio
reinforcement given after varying responses (ex: sales job, slot machines, video games)
variable-interval
1st response after varying period of time elapsed (ex: fishing, calling back after very busy signal)
ratio
rewards are paid out according to the # of desired # of behavior that the subject has produced.
intervals
rewards according to amount of time that has passed, as long as the subject has produced at least 1 instance of the desired behavior during that time.
skinner box
device to control delivery of reinforcers and punishers “operant chamber”
2 main principles of operant conditioning
1) behavior is controlled by consequences-behavior that is followed by a favorable consequence (reinforcer) be epeated, behavior favored by unfavorable consequence (punisher) decrease I frequency
2) positive punishment is behavior followed by arrival of a pleasant event- reinforcement, behavior followed by ending of unpleasant event - reinforcement strengthens behavior it follows, so not the same as punishment
drawbacks
negative emotion like anxiety
often must monitor behavior (may encourage sneaky behavior such as lying)
does not say what people should do
generalization
just like with classical conditioning (ex: “dada” all men or “doggie” for all animals)
discrimination
the learned ability to distinguish between a conditioned stimulus and stimuli that do not signal an unconditioned stimulus
discriminative stimulus
cue or context informs you that you will be rewarded/punished (ex: police car- slowing down you wont get a ticket)
primary reinforcers
naturally are reinforcing (food, warmth, shelter, touch) - fill biological need
secondary reinforcers
associations with primary reinforcers ( money, praise, trophies, facebook “likes”) due to classical conditioning
biological constraints
you cant teach every type of animal any behavior. (raccoons wont drop a coin in a bank, my dog will chase squirrels - so it would be hard to tell them not to chase it)
instinctive drift
animals conditioned behavior reverts to genetic patterns
observational learning
learning by witnessing others behavior - no direct reinforcement but vicarious reinforcement (ex: bobo doll)
latent (hidden) learning
new behavior is learned not demonstrated until reinforcement is provided for displaying it. (rats and cognitive maps)
3 themes of memory
1) memory is active and constructed rather than passive
2) multiple memory system exists
3) memory accuracy can be effective by many factors
memory process
encoding>storage>retrieval
encoding
getting info in memory
storage
maintenance of material
retrieval
getting info out of memory system to use
sensory memory
the immediate, very brief recording of sensory info in the memory system
2 types of declarative memory
episodic memory, semantic memory
episodic memory
memory for your own personal life experience
semantic memory
memory for knowledge about world
procedural memory
doing things
short-term memory (STM)
activated memory that holds a few items briefly (7 digit phone # while dialing)- before info is stored or forgotten
working memory
newer understanding of STM that focus on conscious, active processing of incoming auditory and visual-spatial info, and of info retrieved from long-term memory (reasoning & decision making)
memory span
amount of info stored in STM
chunking
grouping info together
systematic encoding
semantic, ryme, visual
implicit memory
without intention or awareness
echoic memory
stores auditory info coming from ears
iconic memory
reflects info from our visual system
cues
help you “travel” around the associative network
what are the 2 retrieval tasks
recall, recognition
recall
retrieve info learned earlier (short-answer, essay, fill in the blank )- clues
recognition
identify items previously learned (multiple choice, matching, true/false) -all possible answers
how to retrieve info more successfully
cues, targeted practice, state-dependent learning
state-dependent memory
experiencing the same internal state during encoding & retrieval also can enhance memory (matching study patterns to test conditions)
interference
proactive, retroactive