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Describe How Psychologists define and Explain substance abuse? In order for psychologists to endeavour to define substance abuse, 'Substance' itself must be defined an in the context of psychology a substance is defined as anything an individual may ingest that alters mood, cognition or behaviour. Therefore there is clearly a long list of substances including chocolate (known for changes in level of neurochemical Serotonin) or Coffee (Stimulant). Hence the term substance is more commonly referred to nicotine, alcohol, stimulants (i.e. cocaine and Ecstacy) and depressants such as Heroin and Ecstacy. There is distinction between Substance use and abuse. An individual who can enjoy an alcoholic drink, for example, but in a context where there is no dependency on the substance, such a scenario is regarded with social acceptance. Complexities lie in stating at what point an individual changes from using to abusing a substance. Substance abuse is therefore most commonly associated with...

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