WJEC A-Level Psychology 601-5719-7
Psychology Past to Present — The Five Approaches
Contemporary Debates
Principles of Research and Application of Research Methods
Mathematical Requirements for Psychology (Appendix A: AS Unit 2 and A2 Unit 4)
Addictive BehavioursAddictive
Autistic Spectrum BehavioursAutistic spectrum
Bullying BehavioursBullying
Criminal BehavioursCriminal
SchizophreniaSchizophrenia
StressStress
Controversies in Psychology
Applied Research Methods
Addictive Behaviours
Addictive Behaviours: evaluating those explanations and evaluating those methods
- 3 things to know
- A2 Unit 3 Section A
Overview
Recall questions on evaluating those explanations and evaluating those methods.
What you need to know
Answer each one before you reveal it.
Explain how the biological explanation leads to agonist substitution while the learning account leads to aversion therapy.
How does a diathesis-stress model reconcile the three sets of explanations?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Why are biological explanations of addiction criticised as reductionist?
Model answer
They reduce a behaviour with social, economic and psychological roots to genes or a single neurotransmitter system, and cannot explain why most people exposed to a drug never become addicted.
- 2
How does a diathesis-stress model reconcile the three sets of explanations?
Model answer
Biological and personality factors supply a vulnerability while social factors such as peers, media and adversity supply the stressor, so addiction develops only where the two coincide.
- 3
Explain how the biological explanation leads to agonist substitution while the learning account leads to aversion therapy.
Model answer
If dependence rests on altered receptor systems, the logical treatment acts on those same receptors; if it was acquired by association and reinforcement, the logical treatment builds a new, aversive association.
- 4
How does agonist substitution work, and give two examples.
Model answer
An agonist binds to and activates the same receptors as the drug, suppressing withdrawal and craving without the same intoxication or harm, as in methadone or buprenorphine for opioid dependence and nicotine replacement for smoking.
- 5
How does an antagonist differ from an agonist in treating addiction?
Model answer
An antagonist such as naltrexone occupies the receptor without activating it, so if the person does use, the drug produces no reward and relapse is not reinforced.
- 6
Explain how aversion therapy uses disulfiram to treat alcohol dependence.
Model answer
Disulfiram blocks the breakdown of acetaldehyde, so drinking causes flushing, nausea and vomiting, and alcohol is repeatedly paired with illness until it provokes an aversive response on its own.
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