Behaviorism As A Learning Theory
History
Like many ideas in the field of psychology, the
philosophers can trace human behavior back to 'the beginning' -
400 BC, when Aristotle........
Associationists
Aristotle, in his essay "Memory" showed strong focus on
association - a predecessor of behaviorism. He believed, the
associations (for example, between a haystack and a cow) are
made because the objects being associated are similar, or
opposite, or near to each other. Many other philosophers
followed his thoughts:
- Thomas Hobbes (1650) wrote
of fundamental elements of thoughts - sensation, recall, and
sequence, using terms like motion, communication of motion, and
inertia.
- David Hume (1740) stressed that the associations
occurring frequently become firm and that whenever the
antecedent occurs, the consequent is bound to follow.
-
Thomas Brown (1820) added the concepts of frequency, recency,
and vividness in association.
- Alexander Bain (1855) took
the associationism to a new direction. He noted that one must
discriminate among sensory items before they are associated.
- Herman Ebbinghaus formulated a "law of frequency" which
held that learning (association) increased in proportion to the
frequency with which a particular association was made. He also
formulated a "law of recency" which said that recently made
associations were strongest and that they decay over time.
Pavlov
The behavioristic movement in
psychology began to crystallize with the discovery of the
Russian physiologist Ivan Petrovich Pavlov. In 1902, during his
study of the salivary responses of dogs, he constructed a device
that measured the amount of saliva secreted. Pavlov discovered
that the dog's (the most famous dog in the world, but without a
name) saliva began to flow before the food was actually
presented - this is called a conditioned reflex and the
stimulus, in this case, the food dish, is called a conditioned
stimulus . The conditioned reflex is called the conditioned
response today. Watson
John Broadus Watson
(1878-1958) wrote in his book Behavior (1948) "Psychology as
the behaviorist views it is a purely objective experimental
branch of natural science. Its theoretical goal is the
prediction and control of behavior. Introspection forms no
essential part of its methods." Watson believed that
learning was a process of conditioning reflexes (responses)
through the substitution of one stimulus for another. His most
famous experiment was Albert - a child who became afraid of all
furry objects as a result of a conditioning.
Thorndike
Edward L. Thorndike (1874-1949) claimed that "A good
simple definition or description of a man's mind is that it is
his connection system, adapting the responses of thought,
feeling, and action that he makes to the situation that he
meets. (1943). " He formulated his "law of effect" which held
that reward had a strong positive effect on human learning but
that punishment had little or no effect in extinguishing
learning. His other famous theory is the "law of exercise"
which held that the more a stimulus-response connection was
practiced, the stronger it would become; the less it was used,
the weaker it would become. Between Thorndike &
Skinner
Before the emerging of the next behavioristic
giant, let's take a look at a few contributors between the peak
years of Thorndike and Skinner:
- Karl Lashley, one
of Watson's students, caused the behaviorists to give more
consideration to the role of the central nervous system in
explaining behavior. He believed that behavior should
ultimately be explained in terms of processes occurring in the
brain.
- Edwin R. Gutherie (1886-1959) believed that
learning occurred at full strength on the first trial. He
formulated his "law of association" as "A combination of stimuli
which has accompanied a movement will on its recurrence tend to
be followed by that movement."
- Clark L. Hull believed
that the behavior model should be S-O-R instead of the S-R. The
O symbolizes Organism. He recognized that a given stimulus
would produce a variety of responses in different organisms;
therefore, there must be conditions existing within an
individual that interacted in various ways with the stimulus
presented.
Skinner
Let not the strong
Be cozened
By Is and Isn't
Was and Wasn't.
Truth's to be sought in
Does and Doesn't. Skinner (1962)
Burrhus. F. Skinner (1904 - 1990) believed that the study of
behavior must rest on what organisms do and do not do, and that
is all one need pay attention to. He developed the concept of
operant conditioning and concentrated on the observation and
manipulation of behavior. In his 1954 article "The Science of
Learning and the Art of Teaching", he illustrated how human
behavior can be shaped rapidly and without aversive threat
though the use of positive reinforcement. In his 1971 book
Beyond
Freedom and Dignity , he argues that the concepts of
"freedom" and "dignity" are no longer useful in modern society.
Man is not truly free to choose, he says, because what a person
will do in a given situation depends almost entirely on what has
happened to him in the past. Skinner contends that we must learn to
control behavior systematically to produce people who are good
and right-minded. We should expand this controlling to all of
life.
Main Ideas
The basic ideas of behaviorism are: human
behavior is a product of the Stimulus-Response interaction and
that behavior are modifiable. Study of animal is beneficial in
that it help us understand/analyze human behavior.
Stimulus - Response
All complex forms of behavior,
including reasoning, habit , and emotional reactions are
composed of simple stimulus-response events which can be see and
measured. We can trace a child's attitude back to a specific
stimulus. Once we've identified a stimulus that produced
certain response, we can predict the individual's behavior.
Furthermore, if we can control the stimulus, we can control the
individual's behavior. There are two kinds of responses:
- elicited response: the response occur in the
presence of a stimulus
- emitted response: the
movement was emitted by the organism - not as a response to a
stimulus. Skinner called this type of response "operant"
indicating that the organism was taking the initiative and
operating on its environment.
Conditioning
There are two forms of conditioning: - Respondent
(Classical ) Conditioning
- A form of learning in
which an old response is evoked by a new stimulus
- Theory
developed by Pavlov
- Found to be used more in the early
years of development and diminishes as we grow older
-
Examples: the deer flees as soon as it smells a hunter; our
saliva begins to flow when we hear dinner bell
-
Operant (Instrumental) Conditioning
- A form of
learning in which a new response is acquired as a result of
satisfying a need
- Developed by Skinner in 1938
-
Technique: provide repeated reward for behavior that comes
closer to what we want. Skinner refined this process and called
this "Behavior Shaping"
- Two types of reinforcement were
used- positive and negative - to increase the probability of the
addition or removal of a certain response
- Human learning
is based more on operant conditioning than the classical one
- Example: when we are thirsty, we turn the faucet
counter-clockwise. If the water flows, we are rewarded and
would do it again next time. Otherwise, we try the other way.
Behavior Modification
The following five
steps can be used to implement a behavior change program:
- Set behavior goals
- Determine appropriate reinforcers
- Select procedures for changing behavior
- Implement
procedures and record results
- Evaluate progress and revise
as needed
Impact of Behaviorism on Instruction
As M. H. Dembo mentioned in Applying Educational
Psychology in the Classroom, "All teachers have a belief or
theory about learning that is the very fabric of their teaching
strategy." Teachers who agreed with the following statements
are supported by the behavioral psychologists: -
Learners need grades, gold stars, and other incentives as
motivation to learn and to accomplish school requirements
-
Students should be graded according to uniform standards of
achievement, which the teacher sets for the class
-
Curriculum should be organized along subject matter lines that
are carefully sequenced
Teachers who accept the
behavioral perspective assume that the behavior of the students
is a response to their past and present environment and that all
behavior is learned. As a result, any behavior can be analyzed
in terms of its reinforcement history. Since learning is a form
of behavior modification, the teacher's responsibility is to
construct an environment in which the correct behavior of the
student is reinforced. The undesired behaviors of the
student in the classroom can be modified using principles of the
behavior modification. Dr. Dembo suggested the following
procedures to control or eliminate undesired classroom
behaviors:
- Strengthening of the desirable behavior
that will compete with and eventually replace undesirable
patterns of behavior.
- Weakening the undesired behavior by
removing the reinforcing events that maintain the behavior.
-
Using the technique of "satiation" which is a procedure that
encourages a person to engage in a problem behavior over and
over again until tired of it.
- Changing the stimulus
condition that influences the behavior.
- Using punishment
to weaken behavior.
One important application of the
operant conditioning introduced in the instruction fields is
Programmed Learning. In this technique subject matter
is broken into small, understandable steps or "frames," each
followed by a question which the student can almost always
answer correctly. The object is to reinforce the learning
process through an immediate response and the reward of getting
it right. The authors of the book
The Learning Gap think that one of the reason that
American school is failing is because we do not use "error"
effectively. "American conceive errors as a possible precursor
of ultimate failure. People should strive to avoid errors and
to give only the correct response - a routine that fits our
culture and has been strengthened by the writings of behavioral
psychologist such as B. F. Skinner."
Impact of Behaviorism on Instructional Technology
Behavior
principles have proven useful for managing both classroom
behaviors and instruction delivery. Behaviorism has influenced
the development and design of several technologies.
- Teaching Machines uses the principles of the
programmed learning to provide a self-pacing delivery of the
instruction. In 1968, Fred Keller proposed using the
Personalized System of Instruction (PSI) for college
instruction. There are two programming designs for this
technology: linear and branch. Linear design lays out the
sequence of frames for all students to follow; whereas, in
branch design, a student's response determines what follows.
- Computer Assisted Instruction (CAI) The rapid
growth of the personal computers in the society facilitated the
explosion of educational (instructional) software packages.
Hundreds of software products hit the market every school year.
No doubt, the first generation of the software was generally
designed linearly. Key behavior modification principles are used to
program these applications. These principles include:
- Stating the purpose of the software
- Apply the appropriate reinforcer - text or visual or audio
- depending on the application, shaping, chaining, modeling, punishment, and award principles are used
- Very often, a scoring (monitoring) system is present
- Provides the status of progress
CAI comes in various forms:
Drill and Practice Activities, Simulations, and Tutorials.
Electronic learning could be fun using multi-media approach, but
the educators do not think the CAIs can replace active classroom
teachers.
- Virtual Reality According to Chris Byrne
of Human Interface Technology Lab, Virtual Reality has great potential in the
education field. Byrne thinks that VR is particularly useful in
the science field because it provides the students a 3D view of
the world from inside the world. I feel that the weakness of
CAI is the human interface and the lack of appropriate form of
reward (reinforcement). VR can definitely address the human
interface part if it can provide a "real" teacher to give
instruction. Furthermore, if the student can create their own
teacher image to teach them. Then, the reward system would be
more effective comparing with a mechanical "good job" sign. The
VR teacher can even give the child a pat on the head when called
for. VR creates a brand new learning environment for the
world to explore. Behavioristic principles, like other learning
theories, will play a major role in the building of this
environment.
Conclusion
Critics say that
Behaviorism oversimplifies human behavior and that it sees the
human being as an automaton instead of a creature of will and
purpose. Regardless of what the critics say, the behavioristic
approach has exerted a strong influence on American psychology.
It has triggered scientific experiments and the use of statistical
procedures. Most importantly, it has turned the attention of
psychology to solving real behavior-related problems. Since
learning is a form of behavior change, the behavior modification
procedures developed by behaviorists have proven useful to
many school teachers. The footprints of this set of procedures
can be found in many existing CAI packages. Behaviorism has had
major influence in the learning field and it will continue to
play an important part in it.
References:
Charles, C. M. (1976).
Educational Psychology, The Instructional Endeavor . The C.
V. Mosby Company. Dembo, Myron H. (1988). Applying
Educational Psychology in the Classroom. Longman Inc.
Dr
iscoll, Marcy P. (1994). Psychology of Learning for
Instruction. Allyn and Bacon.
Goldenson, Robert M.
(1970). The Encyclopedia of Human Behavior: Psychology,
Psychiatry, and Mental Health. Doubleday & Company.
Stevenson, Harold W. and Stigler, James W. (1992). The
Learning Gap. Simon & Schuster.
Reviewer: Erika
Black Updated: June 13,1995 Send comment to
inst1229@cl.uh.edu