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What is the nature of substance-related disorders?
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◦Problems
related to the use and abuse of psychoactive substances
◦Produce
wide-ranging physiological, psychological, and behavioural effects
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simply the ingestion of
psychoactive substances on occasion
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Substance use
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The
physiological reaction to ingested substances (e.g., drunkenness, getting high)
is referred to as
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Substance intoxication
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What does intoxication depend on?
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- the drug- the amount of the drug ingested - the person's biological reaction
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is difficult to define on the basis
of amount of substance ingested.
According to the DSM-IV and DSM-IV-TR, substance abuse is defined on the
basis of interference with the user’s life
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Substance abuse
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is usually described as addiction;
though there is considerable disagreement about how to define addiction
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Substance dependence
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Requires
greater and greater amounts of the drug to experience the same effect
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Tolerance
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While
responding physically in a negative way when the substance is not longer
ingested
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Withdrawal
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Two physiological reactions to the chemicals ingested
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- tolerance - withdrawal
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Another view of substance
dependence uses _____ themselves as a measure of
dependence
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drug-seeking behaviours
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Drug seeking behaviors is referred to as ___ an not ___
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- psychological
dependence,
not physiological dependence
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combines the physiological
dependence with psychological aspects
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The
DSM-IV definition of substance dependence
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5 main categories of substances
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- depressants- stimulans- opiates- hallucinogens- other drugs of abuse
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◦result
in behavioural
sedation (e.g., alcohol, sedative, anxiolytic drugs)
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Depressants
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◦result
in behavioural
sedation (e.g., alcohol, sedative, anxiolytic drugs)
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Stimulants
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