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Definitions of Theories and Models
Theories tell us why people do what they do. Models tell
us how they do it.
Today, HIV Prevention Programs can draw from many different
social and behavioral theories. It is important to remember
that it may be necessary to select an intervention based on
more than one theory or model.
Selecting an intervention with multiple theories or models
may be the key to address successfully the behavioral
determinates that place your population at risk of acquiring
or transmitting HIV. Refer to the theory(s) that were the
foundation of the original science based intervention.
Although a specific theory is the foundation of your
intervention, it is very likely that other theories may
influence your intervention. If you formulate your own
intervention based on theories alone, it is necessary for
you to select singular or multiple theories as the
foundation for intervening.
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AIDS Risk Reduction Model
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The AIDS Risk Reduction
Model believes change is a
process individuals must go through with different factors affecting
movement. This model proposes that the further an intervention helps
clients to progress on the stage continuum, the more likely they are
to exhibit change.
This model includes
elements of several other theories/models (health
belief model, self-efficacy theory, and psychological theory)
and is applicable to sexually active or injecting drug using
individuals.
This was developed specifically for the
context of HIV perception.
Individuals must pass through three
stages:
A) Labeling – one must label their
actions as risky for contracting HIV (i.e. problematic). Three
elements are necessary
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Knowledge about how HIV is transmitted
and prevented,
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Perceiving themselves as susceptible
for HIV and
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Believing HIV is undesirable.
B) Commitment – this
decision-making stage may result in one of several outcomes
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Making a firm commitment to deal with
the problem,
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Remaining undecided,
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Waiting for the problem to solve
itself, or
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Resigning to the problem. Weigh
cost and benefits - giving up
pleasure (high risk) for less pleasure (low risk).
Major Factors –
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1) response efficacy (effectiveness to
change),
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2) perceived enjoyment (acts being
added or eliminated),
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3) self-efficacy, and
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4) relevant information and social
norms.
C) Enactment – This includes three
stages
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Seeking information,
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Obtaining remedies, and
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Enacting solutions.
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Diffusion of Innovation
Model Back to Top |
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The Diffusion of
Innovation Model looks at how new ideas are communicated to, and
accepted by, members of a group or population.
The three major components
of this theory are
A) Communication
Channels – for dispensing an innovative or new message.
B) Opinion
Leaders – visible, respected people who can assist in dispensing
the message.
C) Time and
Process – required to reach community or group. People
receive/accept messages at different time intervals.
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Health Belief Model
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The Health Belief Model
maintains that health related behaviors depend on four key beliefs
that must be operating for a behavior change to occur.
A) Perceived
susceptibility – personally vulnerable to the condition.
B) Perceived severity
– belief that harm can be done by the condition.
C) Perceived benefits
of performing a behavior – what
they are going to get out of the change.
D) Perceived barriers
of performing the behavior – what keeps them from changing.
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Social Cognitive Theory Back to Top |
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The Social Cognitive
Theory maintains that behavior changes
are dynamic and influenced by personal and environmental factors.
People learn new behaviors through direct experience or modeling
after others by observation.
A) Outcome expectations
- the extent the person values the expected outcome of a specific
behavior. Will it lead to a positive or negative outcome?
B) Self efficacy –
a person’s belief about his/her ability and confidence in performing
behaviors.
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Stages of
Change Model (Transtheoretical Model) Back to Top |
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The Stages of Change Model
maintains that behavior change occurs in stages and that movement
through the
stages varies from person to person.
The six stages are:
1) Pre-contemplation
– no intention to change behavior; not aware of risk.
2) Contemplation -
recognizes behavior puts them at risk and is thinking about changing
their behavior, but not committed to the behavior change.
3) Preparation –
the person intends to change the behavior sometime soon and is
actively preparing.
4) Action - person
has changed risky behavior recently (within the past six months).
5) Maintenance –
person has maintained behavior change for a period longer than six
months.
6) Termination –
individuals are presumed to have no intention to relapse and possess
a complete sense of self-efficacy concerning their ability to
maintain healthy behavior.
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Theory of Reasoned Action Back to Top |
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The Theory of Reasoned
Action maintains a person must have an intention to change.
Intentions are influenced by two major factors.
A) Attitudes towards
the behavior.
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Belief in performing the
behavior is based on positive or negative outcomes.
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Evaluation of
consequences to performing behavior.
B) Subjective norms
about the behavior.
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What significant other
thinks about performing the behavior.
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Motivation to perform
behavior based on subjective norms.
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Empowerment Theory |
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The Empowerment Theory maintains
people change through a process of coming together to share
experiences, understand social influences, and develop solutions to
problems.
Three core elements of
this theory are
1) Populations for
change – individual/group level.
2) Participatory
education – listening, participatory dialogue and action.
3) Focus group
strategies – gathering information and finding solutions with
the community.
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