What is classical conditioning?
A simple form of learning occurring through repeated association of two different stimuli to produce a naturally occurring response.
Explain Pavlov’s study
• Presented dogs with food and measured their salivary response
• rang a bell right before giving them food
• at first dogs would only salivate when food was present
• after a while, dogs began to salivate when they heard the bell
• they learnt to associate the sound of the bell with food
Neutral stimulus
A stimulus that before learning will not evoke a response
Unconditioned stimulus
A stimulus that naturally produces a response
Unconditioned response
An unlearned, in built response.
Conditioned stimulus
A stimulus that because of learning will evoke a response
Conditioned response
A learned response produced by the Cs
What is an unconditioned stimuli and what are some examples
Def: stimuli that organisms react to with out training
Examples: food or pain
What is an unconditioned response, give examples
An unlearned response that occurs naturally in reaction to the unconditioned stimulus
Examples: gasping in pain, jumping when there is a loud noise, touching something hot
What is a Conditioned stimuli give an example
Stimuli that only gets a reaction when the individual or animal learns about them.they have been associated with a primary/ conditional stimulus.
For example, bell when getting food (pavlov) or fire alarm = fire (danger)
Acquisition
The overall process where the organism learns to associate the two events. The NS and UCS are presented together
Performance stage
Once the learning has occurred, the NS becomes the CS and no longer requires the UCS to be present for the Cr to occur
How does timing play a role in classical conditioning and what is this called.
Pavlov found that the closer the pairing between the belland the food, the better conditioned response. This is called contiguity - learning depends on the events being close together in time
Contingency
One event needs to depend or be a result of the other. Food result from ringing the bell
Extinction
The gradual decrease in the strength or rate of a Cr that occurs when the UCS is no longer present
Spontaneous recovery
The reappearance of a Cr when the CS is present, after the Cr appears to be extinguished
Stimulus generalisation
The tendency for another stimulus (similar to the cs) to produce a response that is similar to the Cr
Explain how stimulus generalisation is present in Pavlov’s classical conditioning study
Pavlov conditioned his dogs to salivate when they heard a bell. The also found that they salivated when they heard a buzzer or metronome.
Stimulus discrimination
When the organism responds to the conditional stimulus only but not to other stimuli that are similar
What are taste aversionsand how do they form
Taste aversions develop through classical conditioning. Unlike other types of classical conditioning, an aversion can be developed in one trial. it is a learned avoidance of a particular taste - occurs when nausea occurs after food is eaten
What is preparedness
The biological predisposition to form associations between stimulus that threaten our survival or expose us to ham. Prepared ness aids our survival by avoiding these stimuli.
Explain biological preparedness
Certain associations are learned more readily than others. Phobias of shakes and spiders are more common than phobias of cars. Responses cannot be conditioned with equal cause
What are the four major specific phobia categories, give examples
Explain a study that used classical conditioning to install a phobia in an infant.
• The little Albert study installed a phobia of a white rat in the 9 month old infant
• conducted by John Watson and s Rosalie Rayner
• At the beginning of the study Albert was not afraid of the white rat.
• while playing with the rat, the experimenters scared the boy and made him cry by making a loud noise behind him.
• there fore, he would avoid the rat and would cry whenever it was brought close to him.
• A bond had been established between the sight of the rat and the arrousal of Alberts autonomic nervous system.