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Discuss biological and non-biological factors thought to underpin substance use and abuse2000-2500 words (not counting reference section) (no less than 2000 words) – APA Citations and should use around 20-30 references Define addiction in terms of the key symptoms (do not need a full DSM breakdown); highlight the symptoms/aspects of addiction which will link to the biology (or act as evidence against) rather than an in depth description of addiction. This is not a mental health essay! – What are the main biological theories thought to cause addiction- Substance disruption of reward circuits/dopamine pathways- Genetic predisposition to addiction? – Others?- Do these neural mechanisms explain why people use and abuse substances?- What evidence is there for other psychosocial factors in either causing or maintaining addiction – So weigh up these two lines and decide whether addiction as a whole disorder is explained by biology or only some aspects or only some addictions or something else moderates I have also attached an example of a good essay and an essay requirement document. Please use it for reference!