Lecture 9 Flashcards
What is learning?
Learning is a process based on EXPERIENCE that results in a relatively consistent change in behaviour of behaviour potential
(not due to maturation of the brain but may be dependant on brain maturation-e.g. for babies)
(can do things that change attitude but this may lead to change in behaviour,) (may take multiple times to cause a change)
Underlines our behaviour
Not all learning is good
-Learning occurs through experience
Classical and operant conditioning are the two ways in which we learn
What is classical conditioning?
The learning of a new association between two previously unrelated stimuli
A neutral stimulus becomes associated (or paired) with a stimulus that causes a reflexive behaviour
We learn that a stimulus predicts a certain event and we respond accordingly
What is Reflex in Classical Conditioning?
unlearned response elicited by stimuli that have a biological relevance for an organism
e.g. salivation, close eye when air blown in -protective feature
What is Unconditional Stimulus (UCS) in Classical Conditioning?
Any stimulus the NATURALLY elicits a behaviour
What is Unconditioned Response (UCR) in Classical Conditioning?
The behaviour elicited by the UCS
What is Conditioned Stimulus (CS) in Classical Conditioning?
A neural stimulus that is able to elicit behaviour only after association with the UCS
What is Conditioned Response (CR) in Classical Conditioning?
The behaviour elicited to the CS
What occurred in the experiment Before Conditioning (in Pavlov’s experiment)?
Food(Unconditioned Stimulus) –> Salivation(Unconditioned Response)
Bell(Neutral Stimulus) –> No Salivation(No UCR)
What occurred in the experiment During Conditioning (in Pavlov’s experiment)?
Neutral stimulus(Bell) + Food(UCS) –> Salivation(Unconditioned Response)
What occurred in the experiment After Conditioning (in Pavlov’s experiment)?
Bell(Conditioned Stimulus) –> Salivation(Conditioned Response)
What is Acquisition (during conditioning)?
the process by which the conditioned response (CR) is first elicited
- CS and UCS must be paired several times (except with being sick from something e.g. food-strong response and long lasting)
- Timing is critical - pairing must be closely enough in time to be perceived as being related
What is Delay conditioning?
Typical/common
The onset of the CS (tone) precedes the onset of the UCS (food powder)
What is Trace conditioning?
The onset of the CS (tone) precedes the onset of the UCS (food powder) and the tone goes of before the food powder begins
What is Simultaneous conditioning?
The CS (tone) and the UCS (food powder) occur at the same time
What is Backward conditioning?
The onset of the UCS (food powder) precedes the onset of the CS (tone)
How do advertisers exploit classical conditioning?
Jingles, media, picutes
Burger (UCS) –> UCR(hunger)
M(NS) + Burger(UCS) –> UCR (hunger)
M(CS) –> CR(hunger)
What are the effects of classical conditioning in Medicine: Chemotherapy?
produce nausea, eat food, sight of food, or drive past hospital
Chemo(UCS) –> UCR (sick)
Chemo(UCS) + fries(NS) –> UCR (sick)
fries(CS) –> CR(sick)
What is Thorndike’s Law of Effect 1927?
Actions that subsequently lead to a ‘satisfying state of affairs’ are more likely to be repeated
-cats escaping from box to get food outside by pressing on latch,
What is operant conditioning?
behaviour –> consequence –> effect on behaviour
everyday
food good –> behaviour go to restaurant again
Food + hair –> behaviour not to go again
What is the Skinner box experiment?
B.F.Skinner -
further developed the concept of operant conditioning and showed how operant conditioning could explain much of our daily behaviour
hungry animal bite pin to get food
What was the Stimulus in the skinner box experiment?
Lever
What was the Response(behaviour) in the skinner box experiment?
Pressing the lever
What was the Consequence in the skinner box experiment?
Receiving food
What is Operant Conditioning?
Operant conditioning is learning an association between a behaviour and its consequence
What is Reinforcement Contingency?
To be most effective, the reinforcement should be contingent (dependent) on a desired response
What are the Consequences of behaviour?
Reinforcement
punishment
What is the Reinforcement consequence of behaviour?
a stimulus that occurs after behaviour and INCREASE the likelihood that the behaviour will occur in the future
What is Punishment consequence of behaviour?
a stimulus that occurs after behaviour and DECREASES the likelihood that the behaviour will occur in the future
What is positive reinforcement?
the presentation of a pleasant stimulus after a behaviour
e.g. money pid for coming to work