Selma notices that as her supply of marijuana decreases, she starts thinking more and more about where she can get another supply as well as feeling nervous and anxious. This is an example of ________.

Question

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Selma's situation is an example of psychological dependence, which refers to a mental or emotional need for a substance. Her increased thoughts about obtaining more marijuana and feelings of nervousness and anxiety suggest that her dependence is based on psychological factors rather than a physical need for the drug (physiological dependence) or a reduced response to the drug due to prolonged use (tolerance). Withdrawal refers to the physical and psychological symptoms that occur when a drug is discontinued or reduced.

Selma Notices That as Her Supply of Marijuana Decreases, She