B2- Physiological Addiction Flashcards
Physiological addiction
Each addiction consists of:
- initiation
- maintenance
- relapse
Initiation
why people begin an addiction
Maintenance
why people continue in their addiction
Relapse
why people go back to their addiction after trying to quit
Smoking
- Biological Approach
Initiation:
- genetic predisposition
- dopamine receptors
Maintenance + Relapse
- role of dopamine
- nicotine regulation
- withdrawal symptoms
- tolerance
Genetic Predisposition
(initiation)
- genes may be a risk factor for nicotine addiction
- genetic influences contribute to 50% of the risk of taking up smoking
Dopamine
Dopamine is the brains pleasure chemical and is associated with most addictive substances
Dopamine Receptors
(initiation)
Nicotine molecules attach to dopamine receptors which causes a release dopamine in the brain,
- the release of dopamine causes a buzz which gets smokers ‘hooked’
Role of Dopamine
(Maintenance + Relapse)
smoker continue to smoke because nicotine molecules continue to attach to receptors and release dopamine
Nicotine Regulation
(maintenance + relapse)
people continue to smoke to keep constant levels of nicotine in their blood
- this is so they can maintain the buzz feeling and to avoid withdrawal symptoms (negative reinforcement)
Withdrawal symptoms
(maintenance + relapse)
after finishing a cigarette, withdrawal symptoms will start to appear and the smoker will have another cigarette to avoid these symptoms
Tolerance
(maintenance + relapse)
constant stimulation reduces sensitivity of dopamine, so the smoker will smoke more to achieve the ‘buzz’ sensation they used to get.
Evaluation
- strength
Evidence for nicotine regulation theory
- a study gave smokers cigarettes containing lower amount of nicotine than usual, they respond by smoking more to make up for the nicotine deficit
- this shows regulation theory is valid as the findings match
Evaluation
- weakness
Evidence against nicotine regulation
- not everyone regulates their nicotine levels
- people who smoke 5 a day regularly show no withdrawal symptoms or addiction, they may have learned by observing others instead
- this suggests some people smoke for non-biological reasons
Smoking
- Learning approach
Initiation
- vicarious reinforcement
- positive reinforcement
Maintenance
- negative reinforcement
- classical conditioning
Relapse
- conditioned cues
- self- efficacy
Vicarious Reinforcement
(initiation)
a person observes a smoker gaining satisfaction + pleasure from smoking
- this makes it more likely they’ll begin smoking as they expect the same rewards
Positive Reinforcement
(initiation)
if the consequence of a behaviour is desirable, it will be repeated
Nicotine is a powerful reinforcer through physiological effects of dopamine reward
- enjoyable sensations reward smoking, so they’re likely to continue smoking
Negative Reinforcement
(maintenance)
a desirable consequence by the removal of something unpleasant
- impatient + anxious feelings
- withdrawal symptoms
They relieve these symptoms by smoking. This is negatively reinforcing because it stops unpleasant sensations