learning theories Flashcards
3 learning theories
classical conditioning
operant conditioning
social learning theory
what is classical conditioning ?
it explains how we can learn involuntary reflexes through associating stimuli and responses
unconditioned stimulus
anything that naturally has the power to produce a response in a human/animal
unconditioned response
natural reflex response to an unconditioned stimulus
neutral stimulus
something in the environment which does not initially cause a response
conditioned stimulus
neutral stimulus becomes conditioned stimulus when it acquires the ability to produce a specific response to it
conditioned response
learnt response to something
stimulus generalization
when stimuli similar to CS produce the CR
extinction
when CR declines and disappears because the CS is repeatedly presented in the absence of the UCS
spontaneous recovery
when the CR reappears in a weakened form in response to the CS
discrimination
the CR is only produced in response to the CS and not to similar stimuli
evidence for classical conditioning
- watson and rainer
little albert could be conditioned to become afraid of white rats by pairing the presentation of the rat with a loud noise
how good is the evidence for classical conditioning
- watson and rayner :
- controlled environment = highly scientific and would have reduced environmental variables which could affect results
however :
- lacks ecological validity so doesn’t show how conditioning occurs in the real world
comparisons and limitations to classical conditioning
- explains involuntary reflexes which other theories don’t
- reductionist - ignores influence of biology and focuses on nurture factors
- suggests we don’t have a choice - determinist, when we are conditioned which may not be true as people choose to overcome fears
applications of classical conditioning
- systematic desensitization
- flooding
- aversion therapy, associating an addiction with something unpleasant
what is operant conditioning
voluntary behavior can be influenced through reinforcement and punishment
reinforcement
encouraging behavior
positive reinforcement
encouraging a behavior by giving someone something pleasant,
e.g chocolate for tidying up
negative reinforcement
encouraging a behavior by taking away something unpleasant, e.g, taking away chores for doing well in a test
punishment
discourages a behavior by doing something unpleasant to stop it
positive punishment
discouraging behavior by giving someone something unpleasant e.g extra homework for messing around
negative punishment
discouraging a behavior by taking away something pleasant, e.g phone for being rude
difference between reinforcement and punishment
reinforcement is used when desired behavior occurs and punishment is used when undesired behavior occurs
contingency
reliability or predictability of the consequence following the behavior
for learning to occur, what should contingency be ?
consequence must clearly be linked to the behavior and the individual must perceive that performing a specific behavior will lead to a specific outcome
contiguity
refers to timing between behavior and the consequence
how should contiguity be for learning to take place ?
consequences need to follow the behavior immediately after if there’s a delay association weakens
primary reinforcement
refers to a reinforcement which directly satisfies advice biological needs, e.g drink shelter food warmth comfort
secondary reinforcement
things that help to indirectly meet a biological need, eg getting money to buy food
4 schedules of reinforcement
fixed interval
variable interval
fixed ratio
variable ratio
fixed interval
reinforcer is delivered after a set period of time as long as at least 1 behavior occurs during that time
variable interval
reinforcer is delivered after an unpredictable amount of time which averages to a certain level as long as 1 behavior occurs during that time
fixed ratio
a reinforcer is given after a specified number of behaviours
variable ratio
reinforcer is given after an unpredictable number of behaviors but it averages to a certain number
fixed interval example
getting a cup of tea at work every 2 hours if a good job was done
weakness of fixed interval
as there’s no suprise it may just be that just before the 2 hour interval good work would be produced, before that the work wouldn’t be as good
variable interval example
getting a cup of tea approximately every 2 hours but not being sure at what time period within the 2 hours the cup of tea would be given
strength of variable interval
you know a cup of tea is coming for working well but as you don’t know exactly when, you work well for most of the time in anticipation
fixed ratio example
getting paid at work for every 100 parts produced
variable ratio example
gambling using a slot machine- machine would be expected to pay out over time but person playing wouldn’t know when a reward is going to be given
shaping
idea of encouraging complex behaviors, this is done by reinforcing successive approximations of the behavior
successful approximations
rewarding behavior should occur in steps and should gradually be more selective with rewards until exact behavior is given
chaining
break down behaviors info steps which are taught and reinforced 1 at a time
shaping example
when babies start to babble when learning to speak they are initially reinforced by attention but this only continued if the child goes on to produce recognizable words and later a series of words
thorndike - operant conditioning
cats and puzzle box :
cats used trial and error to try and escape the puzzle box
with positive reinforcement cat food helped them to remember how to escape the puzzle box
behavior changes due to consequence
skinner - skinners box - operant conditioning
- box which animals are put in with levers which delivered a positive, eg food or negative reinforcement, eg shock
rats quickly learnt to go straight to the lever which delivered food (reward)
positive reinforcement
skinner - superstitious pigeon - operant conditioning
- pigeons placed in a box and were randomly dispensed food
- pigeons started to dance as they thought whatever action they did when food was delivered would reward them
- tried to repeat and get further rewarded
associated beauvoir with food - reward can reinforce behavior
strengths of operant conditioning
Applied
Reliable
Evidence
applications of operant conditioning
- helps to create effective learning systems, particularly for children and animals e.g training them to follow an instructions by giving a reward
- explains phobias as they are maintained through avoidance which is negatively reinforced
how is operant conditioning reliable ?
- lots of evidence to support it
- standardized procedures in controlled conditions
evidence for operant conditioning
- skinners box
- skinner - superstition pigeons
- cats puzzle box