Psychology notes that gained me an A* at A Level. I created this using textbooks, mark schemes, class notes and my own further research to provide a comprehensive set of notes. This is formatted according to the AQA psychology specification, where each point is covered, but regardless of the exam b...
Risk factors
Risk factor = increases chances of someone forming an addiction.
1 genetic vulnerability: people don’t inherit an addiction itself but inherit a
predisposition (vulnerability) to dependence. genes may determine the
activity of neurotransmitter systems e.g. dopamine in the brain which in turn
affect behaviours such as impulsivity that predispose a person to
dependence.50%. genetic vulnerability but can only develop if there is an
environmental trigger.
Possible genetic mechanisms:
- Dopamine: People who are addicted have an abnormally low number
of D2 receptors. Fewer D2 receptors means less dopamine activity so
using drugs is a way of compensating for this deficiency – low levels of
D2 receptors increases the intensity of the pleasurable feelings the
substance provides
- Metabolism: some individuals are more able to metabolise (break down)
certain substances which is linked to addiction. Planezza found some
people lack a fully functioning enzyme which metabolises nicotine. They
also smoke less than those smokers w fully functioning versions. Non-
smokers are more likely to carry an allele of the gene causing them to
feel nausea and dizzy from smoking so less likely
Ao3: Research support from adoption studies. Kendler found adoptees w
addicted biological parents had significantly greater risk of becoming addicted
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller chloe79232. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £2.99. You're not tied to anything after your purchase.