Behavior Therapy Core Concepts
October 11, 2003
Behavior Therapy Core Concepts
Behavior therapies differ from other psychotherapies by some
characteristics: the focus is on the present causes of the trouble
behavior rather that on the unconscious causes; the lasting
modification of behavior is a major criteria of therapy success;
treatment procedures are described objectively and are reproducible by
other therapists for patients with similar problems. A behavior
therapist will deem that a maladapted behavior (a phobia, for instance)
was learnt is certain situations and then maintained by environment
contingencies. He will then attempt to replace the maladapted behavior
by the behavior which is desired by the patient, though a new learning
process. The therapist may use numerous techniques which he will chose
according to his patient and the results published for similar
disorders.
Classical Conditioning
At the beginnings was Pavlov's dog. Classical conditioning theory stems
from Pavlov experiments with dogs. This concept consists of the
contingent association of two stimuli. By repetitively coupling a
neutral stimulus which does not trigger any behavioral response with an
unconditional stimulus which automatically triggers an unconditional
response, always the same, and by later removing the unconditional
stimulus, the neutral stimulus alone will trigger an identical
reaction. It will then be names conditional stimulus triggering a
conditional response. As an example of this mechanism is the placebo
effect: the patient receives a medication and is told that the
medication alleviates his pain (which may be true). Then he unknowingly
receives a placebo instead of the medication. The placebo has a good
chance of being as effective as the original medication. In the context
of classical conditioning, extinction occurs when the acquired behavior
is no longer reinforced by the association of the unconditional
stimulus to the conditional stimulus.
Operant Conditioning
The concept of operant conditioning was developed by Skinner working
with rats and pigeons. It is a process of behavior modification
resulting from the contingent association of a behavior and a stimulus.
A certain behavior leads to or is followed by certain events. Positive
reinforcement increases the frequency of a given behavior as a
consequence of the subsequent addition of a stimulus (almost 50 years
ago, when I was a very little girl at the sisters' school, the best
pupil of the week would receive as a decoration a golden medal to be
worn during the following week); negative reinforcement increases the
frequency of a given behavior as a consequence of the subsequent
removal of a stimulus (if I exercise on a regular basis, I'll stop
gaining weight); positive punition decreases the frequency of a
behavior as a consequence of the subsequent addition of a stimulus (the
child who does something stupid is given a spank) ; negative punition
decreases the frequency of a behavior as a consequence of the
subsequent removal of a stimulus (the teenager who fails at school is
deprived from pocket money).
The fundamental assumption here is that behavior is a function of its
consequences. The treatment procedures aim at altering the
relationships between behaviors and their consequences by
reinforcement, punishment (“the carrot and the stick” method),
extinction (of the unwanted behavior), stimulus control, token economy,
praise, systematic desensitivation. For instance, systematic
desensitivation can be used to treat specific phobias like Fear of
Flying: the goal is to associate a state of relaxation with usually
stressful situations in imagination while feeling less and less anxiety
(a kind of Mithridatization).
Discrimination Learning and Social-cognitive Learning
Reinforcements are not the sole determinants of behavior. According to
social-cognitive learning theory, the most important prerequisite for
behavior change is the patient's sense of self-efficacy: the conviction
that he is capable of successfully behaving in such a way as to produce
the desired outcome. Self-regulation derives from social-cognitive
learning theory. It includes what is commonly named “will-power”. It
can be critical in many behaviors such as dieting, engaging in regular
exercise, quitting smoking, managing stress. Discrimination learning is
the process which make people behave differently in different
situations. It explains the flexibility of human behavior. A patient
might not smoke at home in a familiar relaxed environment but might
smoke a lot at work in an office with a difficult boss, a compulsion
which obliges her to go out of the office several times a day to smoke
outdoors and does improve neither her health, nor her relationships
with her boss.
Conclusion
Another developing area is behavioral medicine which tries to create
and maintain behaviors good for health and also treats pathologies such
as headaches, tics, chronic pain by means of relaxation and
biofeedback. During the last years, behavior therapies have also
adopted cognitive views which do not deal only with the observable
behavior, but also with the ideas which the individual has about
himself and his environment. Cognitive behavior therapy treats
depression with an efficiency which has been compared to tricyclic
anti-depression medications.
Bibliography
A glossary of some terms used in the objective science of behavior: http://web.utk.edu/~wverplan/gt57/glayout.html
Behaviorism, Social Cognitive Theory and Field Theory: Current Theory
and Applications:
http://home.okstate.edu/homepages.nsf/toc/EPSY5213Reading5a