| barriers | reasons given or situations that interfere with someone engaging in behaviors that he or she wishes to engage in.
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| cold turkey | stopping a behavior all at once.
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| health behavior | activities that are taken by people who believe themselves to be healthy and that are designed to maintain health, a subclass of lifestyle behaviors.
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| lifestyle behaviors | all of the activities in which people engage.
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| locus of control | the perception of the amount of control one has over events that affect one's life.
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| material reinforcement | rewarding a behavior with a tangible object.
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| reminder system | a means of reminding oneself to perform a particular behavior.
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| self-contracting | making a contract with oneself to change a behavior.
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| self-monitoring | the process of observing and recording behavior.
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| shaping | changing a behavior a little bit at a time.
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| significant other | another person who is important to an individual.
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| social reinforcement | rewarding a behavior with social approval by someone else.
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| tailoring | making a behavior change program specific to the life of the individual.
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