TOPIC: LEARNING APPROACH Flashcards
(46 cards)
MAIN ASSUMPTIONS:
What are the main assumptions for learning approach and what are the three main roles models instrumental in learning behaviour
- we learn by observing others
- our mental state is important in the learning process
- learning doesn’t mean that there will be a change in behaviour
- we are born with a black slate (tabula rasa)
- Live
- Verbal
- Symbolic
CLASSICAL CONDITIONING:
What is conditioning?
This is behaviour that changes according to our environment
It is a term used for association. If something is conditioned, it means that it is learnt
Behaviourists believe that there are two types:
- Classical conditioning
- Operant condtioning
CLASSICAL CONDITIONING:
What is unconditioned stimulus (UCS)
Something we naturally have a response to
CLASSICAL CONDITIONING:
What is unconditioned response (UCR)
The natural response
CLASSICAL CONDITIONING:
What is neutral stimulus (NS)
A stimulus we have no reaction to
CLASSICAL CONDITIONING:
What is conditioned stimulus (CS)
Was a neutral stimulus but now has a conditioned response to it
CLASSICAL CONDITIONING:
What is condtioned response (CR)
Our previous response to a new stimulus
CLASSICAL CONDITIONING:
What is reinforcement
Making behaviour more or less likely to be repeated
CLASSICAL CONDITIONING:
RESEARCHER: PAVLOV (1927)
- Was a russian psychologist who believed we learnt through association
- He conducted a famous experiment of classical conditioning using dogs
METHOD:
He observed that his dogs salivated when his assistants opened the doors to their cages and inferred that they must have learned to associate the opening of the doors with food.
He tested this by associating the ringing of a bell with the food so that the dogs would salivate when they heard the bell
RESULTS:
BEFORE CONDITIONING: Food (UCS) = Salivation (UCR)
Rang Bell (NS) = No response
DURING CONDITIONING = Bell + Food (UCS) - rang bell every single time = Salivation (UCR) - Paired bell with food (association)
AFTER CONDITIONING = Bell (CS) = Salivation (CR) - dog salavated every time the bell rang even if no food is shown
CLASSICAL CONDITIONING:
RESEARCHER: WATSON AND RAYNER’S (1920): LITTLE ALBERT
- Through classical conditioning they were able to create a phobia in one-year-old Albert
- Before the experiment they ran baseline tests to check that Albert was a healthy, happy ordinary little boy
- After the experiment he was left with phobias of anything fluffy, white, mask and soft toys for the duration of his childhood and some of his adult life
RESULTS:
BEFORE CONDITIONING: White rat (NS) = no fear
Steel bar hit the hammer (UCS) = fear (UCR) - natural reflex
DURING CONDITIONING: White rat (NS) + hammer (UCS) = fear - natural reflex
AFTER CONDITIONING : White rat (CS) = fear (CR) - condtioned reflex
Neutral Stimulus (NS): This is a stimulus that, before conditioning, does not naturally bring about the response of interest. In this case, the Neutral Stimulus was the white laboratory rat. Initially, Little Albert had no fear of the rat, he was interested in the rat and wanted to play with it.
Unconditioned Stimulus (US): This is a stimulus that naturally and automatically triggers a response without any learning. In the experiment, the unconditioned stimulus was the loud, frightening noise. This noise was produced by Watson and Rayner striking a steel bar with a hammer behind Albert’s back.
Unconditioned Response (UR): This is the natural response that occurs when the Unconditioned Stimulus is presented. It is unlearned and occurs without previous conditioning. In this case, the Unconditioned Response was Albert’s fear response to the loud noise – crying and showing distress.
Conditioning Process: Watson and Rayner then began the conditioning process. They presented the rat (NS) to Albert, and then, while he was interacting with the rat, they made a loud noise (US). This was done repeatedly, pairing the sight of the rat with the frightening noise. As a result, Albert started associating the rat with the fear he experienced due to the loud noise.
Conditioned Stimulus (CS): After several pairings, the previously Neutral Stimulus (the rat) becomes the conditioned stimulus, as it now elicits the fear response even without the presence of the loud noise.
Conditioned Response (CR): This is the learned response to the previously neutral stimulus, which is now the Conditioned Stimulus. In this case, the Conditioned Response was Albert’s fear of the rat. Even without the loud noise, he became upset and showed signs of fear whenever he saw the rat.
CLASSICAL CONDITIONING:
What is the important feature timing?
The gap between the condidtioned stimulus and the unconditioned stimulus is only 5 seconds
e.g. Dog salivated after hearing a bell because they associated it with food
CLASSICAL CONDITIONING:
What is the important feature extinction?
When a condtioned stimulus no longer produces a conditioned response
e.g if a dog no longer recieved food after hearing a bell, it will eventually stop associating the bell with food
CLASSICAL CONDITIONING:
What is the important feature spontaneous recovery?
When previously extinguished conditioned response returns, usually after a period of rest. This suggests that the learned association is not completely erased, but rather dormant
CLASSICAL CONDITIONING:
What is the important feature stimulus generalisation?
When a condtioned response is produced by stimulus that are similar to the conditioned stimulus
e.g if a dog barks when the doorbell rings, it might also bark when the oven timer dings
OPERANT CONDITIONING:
What is operant conditioning?
This refers to learning from the system of rewards and punishment
and if behaviour leads to a pleasant consequence (a reward), it is likely to be repeated, this means the behaviour has been conditioned
if behaviour leads to an unpleasant consequence (punishment), it is decreased
OPERANT CONDITIONING:
Explain Thorndike’s Law of Effect 1936
Thorndike had created a puzzle box in which he tested what we now know as positive reinforcement
He put hungary cats in cages with flexible doors which opened by pressing a button inside the cage
Thorndike timed how long it took a cat to press this button and escape
Intially cats explored the cage but didn’t know how to escape until Thorndike put fish outside the cage (the cage was called the puzzle box)
The fish was both a reward and a reinforcer which make the cats try a variety of different ways to escape so they could get the reward and eventually they managed it
Once Thorndike knew that the cats has worked out how to escape, he put them back in again and he timed how long it took for them to escape
Hopefully, because the cats knew that there was a reward in the form of the fish, they would escape more quickly as they would learn that pressing that lever would to escape
After 10 trials the cats learnt how to press the button inside their cages so they could escape and get food
OPERANT CONDITIONING:
Explain Skinner’s 1948 experiment
Created his own version of Thorndike’s puzzle box and puts rats instead of cats
Though he wouldn’t be able to use animals for research because of ethical guidlines by British Psychological society
Three operant that follows behaviour:
1) Neutral operants in which are neutral because they don’t increase or decrease behaviour
2) Reinforcer which are operants that increase the likelyhood of behaviour being repeated
3) Punishers which are environmental responses that decrease the chances of a behaviour being repeated because punishment weakenes behaviour
On one wall of the box, there would be a lever and a hopper that could deliver a food pellet to the animal when the lever was pressed. Initially, the rat is likely to wander around the box aimlessly until it accidentally presses the lever and receives a food pellet. Skinner would leave the animal in the box and measure how frequently the animal pressed the lever over time. The frequency should indicate the strength of the conditioning of the behaviour. This would then be repeated with other animals.
A rat in a Skinner’s box that was given positive reinforcement might receive a food pellet every time it pressed a lever and should learn to press the lever more often. A rat in a Skinner’s box that was given negative reinforcement might have an electric shock turned off if they press a lever, and should also learn to press the lever more often. A rat in Skinner’s box that had its heat turned off when it pressed the lever would be receiving negative punishment, and should learn to avoid the lever.
NEGATIVE REINFORCEMENT:
What is negative reinforcement?
This is when you remove something in order to get the desired behaviour
NEGATIVE REINFORCEMENT:
What is continuos reinforcement?
Providing a reward every time
NEGATIVE REINFORCEMENT:
What is intermittent schedule?
Used as a way of maintaining already learnt behaviour
NEGATIVE REINFORCEMENT:
Negative reinforcement in relation to phobias?
The behaviour (avoidance) occurs to reduce negative reinforcement the chances of coming into contact with the phobia stimuli
EXAMPLE:
If someone with a dog phobia sees a dog while walking, they might cross the road to avoid it. This avoidance reduces their anxiety, and the person is more likely to repeat this behavior in the future, reinforcing the phobia.
Negative reinforcement occurs when an aversive (unpleasant) stimulus is removed, and the behavior that led to its removal is strengthened. In the case of phobias, the removal of anxiety through avoidance is the negative reinforcement.
The avoidance behavior, reinforced by the reduction in anxiety, helps to maintain the phobia, even if the initial association with the feared stimulus fades
POSITIVE REINFORCEMENT
Positive reinforcement in relation to phobias
The reward (postive reinforcement) is temporary - a reduction in panic and fear if we came face to face with the phobia
Therefore the phobic behaviour is repeated
Plays a role in maintaining the phobia through operant conditioning, where the avoidance behavior is reinforced by the reduction of anxiety.
POSITIVE REINFORCEMENT
What is positive reinforcement
adding a desirable stimulus (a reward) after a behavior to increase the likelihood of that behavior being repeated
POSITIVE PUNISHIMENT:
What is positive punishment?
Add an adversive (pleasant) stimulus straight away after a behaviour in order to decrease the likelihood of that behaviour happening again
The respondent associates the behaviour with negative consequence so they won’t want to do it again