6. Learning Flashcards
Define learning
A relatively permanent change in behaviour, knowledge, capability or attitude that is acquired through EXPERIENCE.
(NOT a temporary change to behavior/knowledge/attitude due to illness, mood, fatigue or stress)
Name the 3 types of learning
classical conditioning, operant conditioning, and observational learning
Who is the father of classical conditioning? What did he do?
Ivan pavlov
Doctor in Russia
Won Nobel prize in 1904 for experiments in physiology of digestion
Famous for his studies on conditioned reflexes in dogs
Dog was restrained in a harness in the cubicle and isolated from all distractions. An experimenter observed the dog through a one-way mirror and, by remote control, presented the dog with food and other conditioning stimuli. A tube carried the saliva from the dog’s mouth to a container, where it was measured.
- > Dog was salivating when bell rang
- > Original experiment was to collect saliva that dogs naturally secreted (chance)
Why did pavlov win the nobel prize?
He showed that we could pair a conditioned stimulus with a conditioned response
What is emotional learning?
Smells –> Association to an event
E.g. when your new girlfriend has the same perfume as your ex-girlfriend (associations)
TV commercials link movie stars to products
What is vicarious conditioning?
You don’t learn something by your own experience, but from someone else’s (e.g. mom is scared of mice)
What is stimulus generalization?
tone or stimuli similar to the conditioned stimulus produces the conditioned response
Fear of white dog –> also fear of a white rabbit
The salivation conditioned response will decrease the further away from the original tone. (bell curve)
What is stimulus discrimination?
Stimuli does not elicit the CR
E.g. scared of dogs, but cats OK
1: The dog is conditioned to the tone C
2: Generalization occurs, and the dog salivates to a range of musical tones above and below tone C. The dog salivates less and less as the note moves away from C
3: The original tone C is repeatedly paired with food, but when neighbouring tones are sounded, they are not followed with food. The dog is being conditioned to discriminate. Gradually, the salivation response to the neighboring tones is extinguished, while salivation to the original tone C is strengthened
Conditioned stimulus –> conditioned response
Tone C = more salivation
Tone A, B, D, E = progressively less salivation
4: Eventually, discrimination is achieved
Tone C = Stronger salivation response
Tone A, B, D, E = No salivation
example: being able to discriminate between the sounds cars make. Generally we all hear cars and don’t react to the sound the engines make. But if you are someone who is exposed to different cars, you learn to associate a specific engine to a car.
Example: Fresh and spoiled milk discrimination – save you from stomach issues.
What is extinction?
When a classically conditioned stimulus (the tone) was presented in a series of trials without the unconditioned stimulus (the food), Pavlov’s dogs salivated less and less until there was virtually no salivation. But after a 20-minute rest, with the one sound of the tone, the conditioned response would reappear in a weakened form (producing only a small amount of salivation), a phenomenon Pavlov called spontaneous recovery.
What is the acquisition state?
Over a number of pairings, it goes up and plateaus
What is spontaneous recovery?
After a response has been extinguished, it may come back when exposed to the original stimulus
Weaker and shorter duration than original response
Explain higher order conditioning
When another neutral stimulus is paired with a conditioned stimulus that elicits the same response reflex/response
Light reliably signals the bell
Higher order conditioning: Sometimes referred to as “chaining”
Pairing the Cs with another neutral stimulus
Example: (CS) Bell –> (CR) saliva
Light –> bell –> saliva (many times)
Light only –> saliva
It’s the concept that drives advertising companies to pair celebrities with particular brands.
Money is an example of a higher-order conditioning. Alone, money is just cheap metal and paper, but we learn to associate it with other important things in our lives, and we have particular emotional responses when money is involved one way or another.
Another example is when advertisements use celebrities or powerful people in their adds. They want you to associate their brand with something or someone good. Already the brand may make you feel hungry or happy just by looking at it, but by conditioning you to further associate it with a celebrity, they are hoping to have a more powerful response from you.
Explain the little albert study
- Watson & Rayner, 1920
- Purpose: To show that fear could be classically conditioned
- Albert was a normal 11-month-old: No fear of white rat
- Paired sight of rat with loud, scary noise
- After a while, just the sight of the rat, Albert starts to cry: FEAR is conditioned
- Soon, Albert generalized his fear to a white rabbit, Santa Claus mask, etc…
Explain counter-conditioning and the study that explained it
Jones, 1924
Peter was a 3-year-old who had a fear of white rabbits and other white, furry animals
Rabbit was placed far away in lab: rabbit was not a threat
Looks at rabbit –> gets candy
Rabbit moved closer, closer (31 days): each time received candy
Friends brought in and played with rabbit: modelled behaviour
Peter played with the rabbit out of the cage
Name 4 factors that influence classical conditioning
- Number of pairings
(The more pairings, the stronger the association) - How reliably the Neutral stimulus predicts the occurrence of the UCS (response will be acquired more rapidly if conditioned stimulus associated with a strong unconditioned stimulus)
- How reliable the conditioned stimulus predicts the unconditioned stimulus
(the neutral stimulus has to reliably predict the unconditioned stimulus for the organism in order to achieve conditioned stimulus status). - The temporal relationship between the conditioned stimulus and the unconditioned stimulus (the conditioning happens faster when they happen right after the other)
It’ll take place more slowly or not at all if there is a larger time interval between the stimuli
What is operant conditioning?
Your behaviour operates on the environment –> our behaviours have consequences
E.g.: people like what you are wearing –> you’ll wear it again
What is reinforcement?
Reward that strengthens the behaviour
Name examples of primary reinforcement? secondary reinforcement?
Primary Reinforcement: Biological rewards
• Food, sex, sleep, water, termination of pain…
Secondary Reinforcement:
• Cultural, learned … money
What is the skinner box?
- A soundproof box that was designed by skinner to demonstrate principles of operant conditioning.
- A common box has a lever or bar that an animal would press to gain a reward of food or water
What is positive reinforcement?
Strengthens behaviour probability of action goes up
If reward is removed, occurrence goes down or is made extinct
Explain token economies
Shaping in real life:
Prisons: Good behaviour is reward with tokens. Exchange for items or access; Cigarettes, TV, etc…
* Key is that the tokens are progressively harder to earn*
What is negative reinforcement?
IT IS NOT PUNISHMENT
The REWARD is the REMOVAL of a negative stimulus.
It strengthens behaviour (= reinforcement)
• Escape behaviour (escape being cold by turning the heat up)
• Avoidance behaviour (avoid coming late to avoid dad being mad)
Pain killer drugs as a negative reinforcement
What is classical conditioning?
Association learned between one stimulus and another
Is the organism or individual PASSIVE or ACTIVE in classical conditioning?
The organism or individual in classical conditioning is PASSIVE. Associations are made between one stimulus and another (or multiple stimuli) and the organism has some sort of response to them. We’ve been conditioned in many different areas.