learning
a process of change that occurs s a result of an individuals experience
acquisition phase
the period in which the animal is acquiring a new skill
aristotle
the first associationist, made the three principals of association
1. contiguity
2. Similarity
3. contrast
empiricism
the belief that everyone learn empirically
the opposite of nativism
nativism
the belief that some ideas are innate and don't depend on the past
james mill
proposed that if two or more simple sensations are repeatedly presented together the product is a complex idea, and two complex ideas could combine to form a duplex idea
thomas brown
expanded on James Mill's idea by proposing that the length of time two sensations coexist determines the strength of association as well as liveliness or vividness, also affects the strength of association as well as being paired frequently and recency
herman ebbinghaus
first to put the associationist's principals to the test
overlearning
continuing to practice after performance is perfect, supporting the principal of frequency
forgetting curve
how the passage of time has a detrimental affect on performance in a memory task, supporting Brown's recency principal and Aristotle's principal of association
the subject effect
occurs when a participant changes their behaviour because they know they a being observed
comparative simplicity
learning the most basic principals of learning is easier to study the less complex creatures compared to humans
edward thorndike
theory of connectionism
1. law of effect
behaviors followed by satisfying consequences are more likely to be repeated
vise vera for less than satisfying consequences
2. puzzle box experiments
B.F. skinner
1. operant conditioning
2. radical behaviorism
3. intervening variable
operant conditioning
emphasized the role of reinforcement and punishment to shape behavior
behaviors reinforced are likely to be repeated
radical behaviorism
the importance of observable behavior and rejects the use of unobservable processes
intervening variable
the hypothetical construct used to explain the relationship between two observable variables
long term potentiation
a brief burst of electrical stimulation producing long-lasting increases in strength of existing neuron connections
demonstrated in areas of the brain used for long term memories like the hippocampus and cerebral cortex
control systems theory
a branch of science that deals with goal-directed behaviors in both living creatures and inanimate objects
Comparator
receives reference imput and actual imput
reference imput
often a non-physical entity but a conceptual one
actual imput
measures actual physical characteristics present in the environment
feedback system/closed loop system
reference imput -> comparator -> actual imput -> responsive action system -> output
tropisms
movement or change in orientation of the entire animal sorted into kinese and taxes
kinese
an innate behavior in which the direction of movement is random concerning a stimulus.
Is a non-directional response exhibited through random movement in response to a stimulus
taxes
an innate behavior in which the direction of movement is related to the location of a stimulus
the organism moves directly towards or away from a stimulus in a directional manner
fixed action pattern
a sequence of behaviors that has
1. it is part of all the members of a species and may be unique to it
2. suitable experiments have confirmed that it is not a result of prior learned behavior
3. the behaviors occurs in rigid order regardless of whether they are appropriate in a particular context
reaction chains
a sequence of behaviors that occur in a specific sequence in response to stimulus but can be interrupted
sign signals
a trigger for a fixed action pattern
stephen pinker
argued that hereditary plays a larger role in behaviors that assumed ("human nature")
argued saying certain areas of the brain are specialized to perform select functions or environmental responses
wernick's area
essential for language comprehension
broca's area
essential for speech comprehension
habituation
a decrease in the strength of a response after repeated presentation of a stimulus that elicits response
orienting response
turning towards a stimulus and stopping their current activity to orient to the stimulus
1. Course of habituation
the decrements in response from trial to trial are large but get progressively smaller as habituation proceeds
2. effects of time
after habituation the stimulus is withheld for some period of time, the repones will recover
amount of recovery depends on how much time has passed
3. relearning effect
habituation may disappear if the stimulation is not presented for a long time
but of the stimulation begins again the rate of habituation should be faster the second time, third time, fourth etc.
4. effect of stimulus intensity
a reflexive response is stronger with intense stimulus
such a response is more resistant to habituation
and if a stimulus is so strong habituation might not occur at all
5. effects of overlearning
further learning can occur in habituation of the response to a stimulation has disappeared
6. stimulus generalization
transfer of habituation from one stimulus to another similar stimulus
simple systems approach
when a stimulus a repeatedly presented there is a decrease in CA2+ influx in the presynaptic neuron leading to a decrease in neurotransmitter release in the synapse and decrease in the excitation response of the postsynaptic neuron
PET and fMRI
show habituation occurring in the cerebral cortex and hippocampus when presented with human faces
and in the cerebellum when startled with a loud noise
opponent-process theory
when an emotional response to a stimulus weakens with repeated exposure, an opposing emotional reaction is simultaneously strengthened
a-process
initial emotional response
- fast acting
- rises to a maximum and remains there for duration of the stimulus
b-process
active in response to 'a's activity
- slow rise
- slow decay
ivan pavlov
tested dogs levels of salivation when feeding and made the discovery of classical conditioning and developed procedures for studying it
unconditioned stimulus
a stimulus that reliably elicits a character response
unconditioned response
a response to the unconditioned stimulus
conditioned stimulus
a stimulus that does not initially evoke the unconditioned response
conditioned response
any response that occurs during the conditioned stimulus but before the unconditioned stimulus because its elicited by the conditioned stimulus not the unconditioned stimulus
impaired eyeblink conditioning
predictive of the later development of Alzheimer's
conditioned suppression
also called conditioned emotional response (CER) where the UR is an aversive event
occasionally a CS is presented for around a minute followed by the US (usually a shock)
the user learns the association between the CS and the aversize event
used to develop behavior therapies
skin conductance response
a change in the electrical conductivity of the skin
largely attended to emotions of fear or surprise
taste-avertion response
the CS is something consumed, the US is an injection that makes it ill
the result is little to no consumption of that food when later presented with it
stimulus substitution theory
the CR is almost never a exact replica of the UR
not all parts of the UR become the CR
a CR may not include come features that are not part of the UR
in some cases the CR is opposite the UR
sign tracking theory
the CS does not become a substitute for the US but rather a sign signal for the upcoming US
US devaluation
the technique of decreasing the effectiveness of the US after an excitatory CS
acquisition phase basic conditioning phenomena
the learner first experiences a series of CS-US pairings and the CR gradually increases in strength
extinction basic conditioning phenomena
a simple technique for producing a reduction & disappearance of the CR
involves repeated presenting the CS without the US
disinhibition basic conditioning phenomena
presentation of a distraction stimulus before the CS causing the CS to again present a CR
rapid reacquisition
if the subject receives an acquisition phase, extinction, then another acquisition phase with the same CS & US, the rate of learning is substantially faster
conditioned inhibition
excitatory and inhibitory CS
excitatory CS
elicits a CR
inhibitory CS
prevents the occurrence of a CR or reduces the size of it
compound CS
simultaneous presentation of two or more CS
generalization
the transfer of the effects of conditioning to similar stimulus
discrimination
a subject learns to respond to one stimulus but not to a similar stimulus
timing can affect
1. how strong the conditioning will be
2. whether a CS will become excitatory or inhibitory
3. when a CR occurs
short-delay conditioning
the CS begins a second before the US
(strongest rapid conditioning)
simultaneous conditioning
CS & US begin together
If a CS is a good predictor of the presence of the US
it will be exhititory
if a CS is a good indicatory of the absence of the US
it will be inhibitory
trace conditioning
CS and US are separated by some time interval
long-delay conditioning
CS begins several seconds before the us, but the CS continues until the US in presented
backward conditioning
CS is presented after the US
temporal coding hypothesis
in classical conditioning, more in learned than association, they learn the timing between these two events and it affects when the CR occurs
second order conditioning
the CR is transferred rom one CS to another
evaluative conditioning
range from "very-disliked" - "very-liked"
first order CS being related a positive
systematic desensitization
a treatment for phobias that rose out of labs on classical conditioning that slowly introduce extinction to a phobic person
CBT
conditional behavior therapies