Saturday, July 12, 2014
Friday, July 11, 2014
An insight to Behaviorism:
10:01 PM
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There are various theories discussed and formed to understand the
development of humans. One of the dominant theories among these theories is
Behaviorism. From the work of a psychologist named John B. Watson, in around
1870s, the behaviorism was originated (Coon, 2005). He was impressed by
the work of Ivan Pavlov and was influenced by him. Before his experiments and
notion came into existence, psychologists were concerned with the development
of mind and mental processes. However, he opposed to this view and strongly
believed that psychology should not be concerned with how mind and mental
processes work, instead psychology should be concerned with behavior. He believed that we need something stable,
something that can be measured to understand the human development (Cohen, 2009). That prospect that
could be measured according to him was the behavior of human. Thereby this
notion of human development was formed. The main argument of behaviorists is
that behavior should be studied because it could be dealt directly. It is
something we could see and measure. However, mind and mental processes in the
psychology should be ignored since it could not be dealt directly. It is something
which could result in inconsistency (Henton & Iversen, 2011). Behaviorism
emphasized the importance of psychologists studying only the observable
behavior. One of the proponents of this theory was B.F.Skinner, whose experiment
was named as Operant Conditioning. He believed that behavior can be
conditioned. His experiment on Operant Conditioning will be further discussed
by giving a brief to his experiment and his principles, positive reinforcement,
negative reinforcement and punishment. Furthermore, the relationship between
different developmental stages and learning through Operant Conditioning would
be discussed and also how to apply this to the classroom will be examined.
Operant Conditioning by B.F.Skinner:
9:59 PM
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Skinner was one of the influential psychologists in behaviorism. He made his
reputations by testing and taking a step above the experiments of Watson and
Pavlov, another two influential psychologists. He dismissed the notion that
organisms were passive and they do not have any control over their behavior. He
believed that we behave in certain ways because if we act in certain ways it provides
us a particular consequence (Coon, Mitterer, Talbot, &
Vanchella, 2010.).
He further believed that our behaviors are determined by the pleasant and unpleasant
consequences of our behavior. Therefore, according to him organisms are clearly
a thing which could be operated in any way we want if we provide them a
pleasant consequence of that particular action. Skinner did several experiments
to explain his notion using animals such as mice and pigeons. He carried these
experiments in a box which was named as “Skinner box” where the behavior can be
measured and controlled (Cohen, 2009). The experiment
which was used the rat will be further demonstrated.
Fig.1: Skinner box
Skinner placed a
hungry rat in the box like the one shown in Fig.1. Inside the box was a bar
connected to a pallet (food) dispenser. The rat was all alone in the box
therefore he was running here and there exploring the box. When the rat was
running around, exploring the box in different angles, at some point he found a
bar in the box. He then pressed the bar; not knowing what would be the
consequence. But when he pressed the bar, a small food pallet was released. The
hungry rat ate the food pallet and the behavior was soon again continued. It
was because the rat was hungry and was in need for food and by pressing the bar
his desired response was made, a pallet of food. Thereby he wants to repeat the
response and therefore he made the action, pressing the bar. After this
behavior of the rat, Skinner concluded that a behavior reinforced by a pleasant
consequence increases the probability of that behavior occurring in the future (Henton & Iversen, 2011) since in his
experiment, the food reinforces bar pressing and soon the rate of pressing the
bar increased.
Skinner wanted to
know the consequence if he stopped giving the food even if the rat pressed the
bar. Therefore, he disconnected the food dispenser. When the rat pressed the
bar there was no food released. But before skinner offered food every time the
rat pressed the bar. By not providing the food even if the rat pressed the bar,
the action, pressing the bar was less frequent and finally at some point the
action totally was diminished. After this response of the rat, skinner was
quite sure of his experiment. He then concluded that if a pleasant consequence
is rewarded to particular behavior, then the behavior increases and in similar
way, if an unpleasant consequence is followed by the particular behavior, the
behavior decreases (Henton & Iversen, 2011).
Skinner then
varied the experiment by linking it to the light. The condition was that the
food will be released only by pressing the bar when the light was on but if the
light was off there will not be any food rewarded. Soon the rat figured out
this condition and he began pressing the bar when the light was on and avoided
pressing the bar when the light was off. Based on this experiment, Skinner was
assured that animal is active and the occurrence of increase of response is
followed by its consequence, reinforce (Cohen, 2009). He introduced the
word “operant” after this experiment which means that organisms operate on the
environment.
Principles of Operant Conditioning:
9:57 PM
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A positive
reinforce is a stimulus which will increase the probability of the particular
behavior occurring in the future (Henton & Iversen, 2011). If we look at the
experiment by skinner, a positive reinforcement was made. The behavior was
pressing the bar, a desired response was given to that behavior, a food pallet
and therefore the action continued. Here the positive reinforcement is made
through rewarding the food which increased the behavior happening again.
Negative reinforcement:
A negative reinforcement
is a stimulus which when removed would increase the probability of particular
action or behavior occurring in the future (Cohen, 2009). The behavior will
be more frequent or will increase if we remove the particular action. The
objective of negative reinforcement is to increase the probability of
particular action occurring in the future. In the Skinner box, at first there
was an electric shock introduced when the rat jumped around, but when the rat
started to press the bar, the shock was switched off which made the action,
pressing the bar increase.
Punishment is
often regarded as negative reinforcement. But these two are separate elements.
The objective of punishment is to decrease the probability of particular action
occurring in the future, while the objective of negative reinforcement is to
increase the probability of particular action occurring in the future (Cohen, 2009). For instance, if
the rat was given an electric shock every time the rat pressed the bar, there
is unlikely probability that he will repeat this behavior.
Relationship between the different developmental stages and learning:
9:56 PM
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Early childhood (0-6 years):
Middle Childhood (7-12 years):
Adolescence (13-21 years):