Edexcel A-Level Psychology 9PS0
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Health Psychology
Addiction, tolerance and dependency
- 3 things to know
- Papers 2 and 3
Overview
Recall questions on addiction, tolerance, physical and psychological dependency and withdrawal, neuroadaptation and receptor downregulation, and cognitive factors such as outcome expectancies, low self-efficacy, rationalisation and self-medication.
What you need to know
Answer each one before you reveal it.
Why does reduced receptor sensitivity lead to tolerance?
What is the consequence of neuroadaptation for drug dosage over time?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is addiction?
Model answer
A chronic condition characterised by compulsive engagement in rewarding stimuli despite adverse consequences, involving loss of control over the behaviour.
- 2
Define tolerance in the context of drug use.
Model answer
Tolerance occurs when repeated exposure to a drug leads to diminished effects, requiring increased doses to achieve the same response.
- 3
What is physical dependency on a drug?
Model answer
Physical dependency develops when the body adapts to a drug's presence and requires it to function normally, with cessation causing physiological disturbance.
- 4
How is psychological dependency defined?
Model answer
Psychological dependency involves emotional or mental reliance on a drug to cope with stress, emotions or daily functioning, without necessarily involving physical adaptation.
- 5
How can physical dependency be distinguished from psychological dependency?
Model answer
Physical dependency is distinguished by the presence of measurable physiological changes and somatic withdrawal symptoms, rather than purely emotional or cognitive cravings.
- 6
What is withdrawal?
Model answer
Withdrawal refers to the cluster of adverse physical and psychological symptoms that occur when a dependent individual reduces or stops drug intake.
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