learning approach : behaviourism Flashcards
define the behaviourist approach
- all behaviours are learnt from our environment
- studying observable behaviour
assumptions:
- All animals are born with a blank slate and all behaviours are learned from experiences
- Only investigate things that can be observed and measured
- lab studies to maintain more control and objectivity within their research
- animals and humans learn in the same way
- all learning is acquired through classical/operant conditioning
classical conditioning
= This is learning through association
- We learn to associate a previously neutral stimulus with a stimulus that already produces a response
- Through regular pairing, the neutral stimulus becomes a conditioned stimulus producing a new learned response (conditioned response)
classical conditioning = pavlovs dog
Pavlov conditioned dogs to salivate when a bell rings
Before conditioning: UCS = food, UCR = salivation, NS = bell
UCS → UCR
NS → No response
During conditioning: bell and food occur at the same time
NS + UCS
After conditioning: CS = bell, CR = salivation
CS → CR
- When the bell rang the dog started to salivate even when there was no food present
- Pavlov showed how a neutral stimulus (bell) can come to elicit a new learned response (conditioned stimulus) through association
little albert
- Watson and Raynor
- Whenever Albert played with a white rat, a loud noise was made. The noise (UCS) caused a fear response (UCR).
- Rat (NS) did not create fear until the bang and the rat had been paired together several times.
- Albert showed a fear response (CR) every time he came into contact with the rat (now a CS).
what is operant conditioning?
This is learning through the consequence
operant conditioning: 3 types of consequences
- Positive reinforcement - receiving a reward when behaviour is performed
- Negative reinforcement - produces behaviour that avoids something unpleasant
- Punishment - an unpleasant consequence of behaviour
Positive reinforcement and negative reinforcement increase the likelihood that behaviour will be repeated. Punishment decreases it.
operant conditioning : skinners box
● Rats and pigeons in specially designed cages
● Positive reinforcement: when a rat activated a lever (or a pigeon pecked a disc) it was rewarded with a food pellet
- a desirable consequence led to behaviour being repeated
● Negative reinforcement: the rat would also press a lever to avoid an electric shock, and this behaviour would also be repeated