Transcript Classical Conditioning

Classical
Conditioning
Learning
• A relatively permanent change in
behavior due to experience
Classical Conditioning
• Have you ever been “conditioned”?
– What does that mean?
Classical Conditioning
• A type of learning where a stimulus gains
the power to cause a response because…
• it predicts another stimulus that already
produces the response
• Basically…associating
In your own words…
1. Unconditioned Stimulus (UCS)
• A stimulus that triggers a response
automatically and reflexively.
In your own words…
2. Unconditioned Response (UCR)
• The automatic response to the
unconditioned stimulus
In your own words…
3. Conditioned Stimulus (CS)
• A previously neutral stimulus that,
through learning, has gained the power
to cause a conditioned response.
In your own words…
4. Conditioned Response (CR)
• The response to the conditioned
stimulus.
In your own words…
Let’s draw this out
• http://chiron.valdosta.edu/whuitt/col/behsy
s/classcnd.html
Experiment
Pavlov’s Dogs
Lemonade
Jaws
The Office
Squirt Gun
UCS
UCR
CS
CR
An example from the Office
An example from our own
class
Can you train Pavlov’s dog?
• I need a volunteer…
• http://www.nobelprize.org/educational/med
icine/pavlov/pavlov.html
Warmup
• UCS/UCR/CS/CR
Quick Recap
• Jacob's date was wearing a very
alluring perfume on their recent date.
The date itself was quite exciting. The
following day when Jacob gets into his
car he smells the lingering scent of his
date's perfume and his heart rate jumps
up immediately.
• UCS?
• UCR?
• CS?
• CR?
Acquisition
• What do you think it means?
– Associating a neutral stimulus with a UCS so that
it comes to elicit the CR
– AKA?
– Little time between presentation of UCS and CS
Extinction
• What do you think it means?
– The diminishing of a conditioned response
– AKA?
– Once the dog has been conditioned, its conditioned
salivation response will not last forever.
Spontaneous Recovery
• The reappearance, after a pause, of an
extinguished conditioned response
• AKA?
Behaviorism
• Influential during the 1st half of 20th
century
• Psychology should be an objective based
on observable behavior
• John Watson (1913) urged colleagues to
discard reference to inner thoughts
feeling and motives
– No more introspection
• Give me a dozen healthy infants, wellformed, and my own specified world to
bring them up in and I'll guarantee to take
any one at random and train him to
become any type of specialist I might
select -- doctor, lawyer, artist, merchantchief and, yes, even beggar-man and thief,
regardless of his talents, penchants,
tendencies, abilities, vocations, and race
of his ancestors.
--John Watson, Behaviorism, 1930
Little Baby Albert…
• Let’s watch a video on how Watson
conditioned Little baby Albert
…(start @13min)
Generalization
• The tendency for stimuli similar to the CS
to elicit similar responses.
• The dogs salivated upon hearing the
sound of bells that were similar to, but
not the same as, the one to which Pavlov
conditioned them to respond.
Discrimination
• The ability to distinguish between a conditioned
stimulus and stimuli that do not signal an
unconditioned stimulus
• Pavlov was also able to train his dogs to
discriminate one sound from another and to respond
to only one type of bell
Taste Aversion
• John Garcia researched how classical
conditioning could be related to food
• How so?
Taste Aversion
Classical Conditioning
Comic Strip