1.5 Operant Conditioning (other principals)
Presented by Sevilay Dogan
Shaping
Another important concept for us to understand is Shaping, which is rewarding successive approximations of target behaviour. So rewarding and/or reinforcing responses closer to the desired outcome.
Here we will use the example of learning to do a headstand. The keyword here is to ‘learn’.
Learning to do a headstand involves practice and that learning through practice is termed ‘Shaping’ in operant conditioning. So Shaping is the process of learning to perform a headstand.
The target behaviour here is to perform a headstand. So you’re going to learn this gradually through a series of behaviours which may include taking up some yoga classes.
(hover your mouse over each step in the process)
Initially you’re going to reinforce simply showing up to class.
But obviously a headstand requires more than just showing up, so the next thing you’re going to maybe do is get into a position of putting your hands down on the mat.
Then the next step might be lifting your legs off the floor - so lifting legs becomes the next behaviour that is reinforced until such time you have learned to perform the target behaviour.
Next you might need to reinforce placing your forearms on the mat. And again, you’re going to practice steps again and again until this is learned.
Diagram images sourced from Khan Academy: https://www.khanacademy.org/
Sensitisation and Habituation
The next couple of concepts to grasp are sensitisation and habituation.
Habituation
Habituation is a decrease in an innate response to a frequently repeated stimulus
Results in a decrease in responsiveness
Sensitisation
Sensitisation is the increased reaction to a stimulus after repeated exposure
Results in an increase in responsiveness
(hover over each image below for an example of habituation and sensitisation)
Habituation
Habituation refers to the magnitude of the response which decreases as the organism becomes accustomed to it. An example of this is caffeine: someone who drinks coffee for the first time may experience symptoms such as clammy hands, increased heart rate etc. As habituation takes place, these symptoms in the body may fade as the person’s tolerance to caffeine increases.
Sensitisation
Sensitisation on the other hand, refers to the increase in magnitude of response so when repeated exposure to a stimulus result in increased or amplified reaction to the stimulus. So an example may be repeated startle respond to loud sounds.