Group members:
If you were to move into a new town and
you came to a park then an attractive and pretty girl spoke to you, you would
probably keep going to that park again.
The changing frequency of people’s behavior
caused by the consequences of their actions is called operant conditioning. People learn from the consequences of their
actions and their behavior changes.
Operant Conditioning was first
described by American psychologist, Edward Thorndike (1991). At first,
Thorndike was interested in the question of animal intelligence, which he
investigated using an apparatus he called a "puzzle box." A hungry
cat was placed inside the box, food was placed outside, and the cat's efforts
to escape were observed. With each trial, the cat becomes more efficient at
opening the door of the box. Based on these observations, Thorndike formulated
the "Law Of Effect", which states that the behavior that yields good
consequences will be strengthen, and the behavior that yields bad consequences
will be weakened.
Thorndike's law of effect formed the
basis for subsequent study of what is now referred to as operant
conditioning in contemporary psychology.
There are three ways in which the desirable
and undesirable consequences of our behavior influence our future behavior:
1. Positive Reinforcement
2. Negative Reinforcement
3. Punishment
Positive Reinforcement
In positive reinforcement, the
consequences of a behavior are positive. This causes the increasing frequency
of that behavior. People tend to repeat the behavior that gives them good
result. In positive reinforcement, the good result is called positive reinforcer or reward. Positive reinforcement is used to increase the
frequency of wanted behavior.
For example, a
lazy child was told by his parents that he would get a bar of chocolate if he
can finish his homework before dinner time. Because he liked chocolate so much,
he started to do his homework right after he had finished his lunch. As he
finished the homework before dinner time, he got the chocolate his parents
promised. This keeps repeating for the next days.
From this case, the reward is the
chocolate and the behavior increased is finishing homework as soon as possible.
There are two
important issues in the use of positive reinforcement:
1.Timing.
Reward
must be given directly after the behavior wanted. The more delay or time
interval between the behavior and the reward, the slower the learning occur. This
delay has been referred to as the
principle of delay of reinforcement.
For
an example, if we were to train our dog to give a “handshake”, we should give our
dog a piece of biscuit right after it took its paw and gave us a
“handshake”. Mostly, the optimal time is only one or two seconds.
2. Consistency in the delivery of
reinforcement.
In the beginning of the learning
process, the reinforcement must be given consistently after every response. But
after the learning occur, it’s not always
important to reinforce every response.
So, if we were to train our dog to give
a “handshake”, we should give our dog a piece of biscuit everytime after
it succeed shake your hand. But after the dog is well-trained, the biscuit is
not always important anymore.
Negative Reinforcement
Sometimes, the increasing frequency of
a behavior is to avoid aversive event. If a behavior is able to take away
something we don’t like, then we tend to repeat that behavior again and again.
For example, when
a naughty child is given punishment by his parents, he cried. To stop his
crying, his parents then cancelled the punishment given. The next time he got
punishment, he will cry again to make his parents cancel the punishment.
From this example, the increasing behavior
is crying. The aversive event being taken away is the punishment.
Negative reinforcement is a very powerful
method of reinforcement, so we learn patterns of behavior quickly and easily.
Punishment
Punishment is a negative consequence that leads to a decreasing in the frequency of the behavior that produced it. For
example, if you keep talking in class while teacher is teaching infront, a
negative consequence will surely occur. The teacher will scold you or give you
another type of punishment. And you will probably not try to talk while teacher
is teaching again. Punishment can be a valuable way for discouraging
inappropriate behavior only if the
punisment is appropriately used.
Testimony:
I think positive reinforcement is the best method compared with the other two. So, before we try to give others punishment or negative reinforcement, it's better to give the positive one first.
I think that's all for this operant conditioning topic. I hope you guys can understand more about this principle of learning.