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Brief Cognitive-Behavioral Therapy -
From NIDA
An approach that has gained widespread application in
the treatment of substance abuse is cognitive-behavioral therapy (CBT).
Its origins are in behavioral theory, focusing on both classical
conditioning and operant learning; cognitive social learning theory,
from which are taken ideas concerning observational learning, the
influence of modeling, and the role of cognitive expectancies in
determining behavior; and cognitive theory and therapy, which focus on
the thoughts, cognitive schema, beliefs, attitudes, and attributions
that influence one's feelings and mediate the relationship between
antecedents and behavior. Although there are a number of similarities
across these three seminal perspectives (see Carroll, 1998), each has
contributed unique ideas consistent with its theoretical underpinnings.
However, in most substance abuse treatment settings, the prominent
features of these three theoretical approaches are merged into a
cognitive-behavioral model.
Before focusing more specifically on the
cognitive-behavioral model, this chapter examines the behavioral and
cognitive theories and therapies that serve as the foundations of and
have contributed significantly to the cognitive-behavioral approach to
substance abuse treatment. Both behavioral and cognitive theories have
led to interventions that individually have been proven effective in
treating substance abuse. Several of these are reviewed, as they have
been successfully incorporated into an integrated cognitive-behavioral
model of addictive behaviors and their treatment.
In contrast to many other methods, behavioral
approaches to the treatment of substance abuse have substantial research
evidence in support of their effectiveness. Two recent comprehensive
reviews of the treatment research literature offer strong evidence for
their effectiveness (Holder et al., 1991; Miller et al., 1995). However,
some critics argue that this is because behavioral approaches have been
developed under controlled conditions and that in "real" therapy there
are many more variables at work than can be measured in controlled
experiments. Providers should take advantage of the wide range of
behavioral therapy techniques that are available. These techniques can
be conducted successfully in individual, group, and family settings,
among others, to help clients change their substance abuse behaviors.
Behavioral approaches assume that substance abuse
disorders are developed and maintained through the general principles of
learning and reinforcement. The early behavioral models of substance
abuse were influenced primarily by the principles of both Pavlovian
classical conditioning and Skinnerian operant learning (O'Brien and
Childress, 1992; Stasiewicz and Maisto, 1993). (See Figure 4-1 for
definitions of classical conditioning and operant learning.)
Today, behavioral therapy for the treatment of
substance abuse disorders is based primarily, though not exclusively, on
methods derived from both operant and classical theories of learning. A
major tenet of behavioral therapy is that because substance abuse is a
learned behavior pattern, changing the reinforcement contingencies that
govern this behavior can modify it. This goal can be achieved by
focusing on either the classically conditioned craving responses or on
the operant reinforcement patterns that are assessed as maintaining the
substance abuse. More specifically, the classically conditioned response
can be addressed either through extinction or counterconditioning
procedures; the operant responses can be targeted through contingency
management or coping skills training. (More information about the basic
assumptions of behavioral theories concerning substance abuse disorders
is contained in Figure 4-2.)
According to behavioral theory, changes in behavior
come about through learning new behaviors. Because substance abuse
behavior is learned, it can be changed by teaching the client more
adaptive, alternative behaviors aimed at achieving the same rewards.
Figure 4-3 provides an overview of some of the advantages of behavioral
theories of substance abuse and dependence and their treatment.
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By its very design, most behavioral therapy is brief.
The aim is not to remake personality, but rather to help the client
address specific, identifiable problems in such a way that the client is
able to apply the basic techniques and skills learned in therapy to the
real world, without the assistance of the therapist. Behavioral therapy
focuses more on identifying and changing observable, measurable
behaviors than other therapeutic approaches and hence lends itself to
brief work. Treatment is linked to altering the behavior, and success is
the change, elimination, or enhancement of particular behaviors.
Regular assessment and measurement of progress are
integral to effective behavioral therapy. Decisions about the length of
treatment are made on the basis of these assessments, rather than
according to a formula or theoretical assumption about how long therapy
should take. Each individual is approached as a unique case, albeit one
to which broad principles can be applied.
A principal of classical conditioning is that if a
behavior occurs repeatedly across time but is not reinforced, the
strength of both the cue for the behavior and the behavior itself will
diminish and the behavior will extinguish. This principal has been the
foundation of behavioral treatments known as "cue exposure" (O'Brien et
al., 1990; Rohsenow et al., 1991; Rohsenow and Monti, 1995). Even after
relatively long periods of abstinence from substances, being placed in
situations that have physical-environmental, social, or emotional cues
associated with past substance abuse will elicit strong physiological
arousal reactions and reports of strong sensations of craving. In cue
exposure, a client is purposefully presented with such cues physically
(e.g., by showing his personal drug paraphernalia or by accompanying him
into a well-frequented bar), or visually through video depiction of a
drug-using scenario or through visualization of such a scenario.
However, the client is prevented from drinking or taking drugs. This
extinction process, over time, leads to a decreased reactivity to such
cues.
O'Brien and colleagues found that cocaine-dependent
clients showed the prototypical arousal and craving responses when first
presented drug-related cues that reminded them of their drug use
(O'Brien et al., 1990). Clients then began the cue-extinction protocol.
By the sixth 1-hour treatment session, they no longer reported either
subjective highs or physiological withdrawal. By the 15th session, all
clients reported that they no longer experienced craving when presented
with the drug-related cues. Clients who received the cue exposure as
part of their standard outpatient treatment for cocaine use were also
less likely to drop out of treatment and had more cocaine-free weeks
than did clients attending the same outpatient program but who did not
receive cue exposure.
Another method used to modify behavior according to
classical conditioning principles is to make behaviors that had been
associated with positive outcomes less appealing by more closely
associating them with negative consequences. By repeatedly pairing those
cues that previously elicited a particular behavior with negative rather
than positive outcomes, the cues lose their ability to elicit the
original classically conditioned response; instead, they elicit a
negative outcome. This has led to the development of what have been
described as aversive conditioning or counterconditioning
treatment approaches (Howard et al., 1991; Rimmele et al., 1995). These
procedures repeatedly pair negative outcomes with the substance-related
cues previously associated with the positive consequences of substance
use.
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