Behaviourist approach Flashcards
What is the behaviourist approach?
-Behaviourism was pioneered by Watson
-emerged at the beginning of the 20th century
- rejected wundts introspection- too vague/unmeasurable
- created with developing pyschology as a scientific discipline
What are the assumptions?
-All animals are born with a blank slate, and all behaviors are learned from interactions with the environment (experiences).
-Not interested in mental processes, only things that can be observed and measured.
-Rejects Wundts research.
-Importance of control and objectivity
-Use of animals to replace humans in research
-Use lab studies
-Classical conditioning
-Operant conditioning
What is classical conditioning ?
- Classical Conditioning (CC) (learning via association) is one of the core assumptions of the behaviourist approach
- CC occurs when a neutral stimulus is substituted for the original unconditioned stimulus to produce a conditioned response
Outline Pavlov’s dogs
-Pavlov noticed that the dogs began to salivate before they saw or smelt their food - in fact they began to salivate when they heard the footsteps of the lab assistants approaching (the dogs had learned that these footsteps = food!)
Pavlov was astounded by this discovery: the dogs should only salivate when presented with the unconditioned stimulus - food - rather than a neutral stimulus (footsteps)
-In order to test what he had just stumbled upon he set up the following procedure:
-The dog is given food as usual (unconditioned stimulus)
-The dog salivates when it sees and smells the food (unconditioned response)
-A bell is sounded (neutral stimulus) every time the dog is given food (unconditioned stimulus)
-A bell is sounded every time the food is presented (the pairing of neutral and unconditioned stimuli)
-After repeated pairings of the dog salivates when it hears the bell
-The bell has become the conditioned stimulus
What is operant conditioning ?
Operant conditioning (OC) (learning via consequence) and is one of the core assumptions of the behaviourist approach
What are the types of operant conditioning ?
- Positive reinforcement: performing a behaviour to experience the positive consequences e.g. completing homework in order to gain praise from the teacher
-Negative reinforcement: discontinuing a behaviour to avoid unpleasant consequences e.g. completing homework to prevent being given a detention
-Punishment: a type of deterrent which can be positive (i.e. direct) e.g. a detention, or negative (indirect) e.g. not being allowed to attend a party
Explains skinners rats
- Research using animals (particularly rats and pigeons) by Skinner demonstrates the principles and mechanisms of OC:
-A rat is placed in a specially designed box (known as a ‘Skinner box’) - The box contains a lever which the rat can press
- When the rat presses the lever a food pellet (the reward) is dispensed
Evaluation of Behaviourist approach
(strength/counterpoint)
- Strength - it increases scientific credibility.
- The behaviorist approach is based on well controlled research.
- Focused on observable behavior within highly controlled lab settings.
- All other possible extraneous variables were removed allowing cause and effect to be established
- Could really demonstrates how reinforcement influenced animal behavior.
- Counterpoint:
- Simplify learning processes such as human thoughts.
- Social learning theory and cognitive approach draw attention to mental processes and their important still learning.
- Learning is more complex than observable behaviors alone and should account for mental processes, which are also an essential part of the picture.
REAL EWORLDDDD
Evaluation of Behaviourist approach
(strength/weakness)
-Strength - real world application
- Token economy systems - often used in institutions as positive reinforcement
- Phobias - due to learning experiences through classical conditioning
- This increases value as it has wide-spread application.
- Weaknesses
- Animal studies
- more control over indiviual differences avoid demand charctersistics.
- Using animals are unethical as there is less concern about protection
- dont generalise to human behaviour
- Skinners , operant conditioning may provide an understanding of rat behaviour and humans
Evaluation of Behaviourism
(link to issues and debates )
- Both forms of conditioning (and behaviourism generally) are highly deterministic as they assume that a specific reponse will follow a specific stimulus (CC) or that only behaviours which bring rewards are likely to be repeated (OC). There is little room for free will in conditioning; the assumption is that people are controlled by environmental forces and have little autonomy over their own destiny.
- Both forms of conditioning (and behaviourism generally) are reductionist as they do not consider the role of other significant influences on behaviour such as genes, personality, culture.