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AQA Psych A-Level - What do we need to know for Biological Explanations of OCD?

Do we need to know in detail stuff about the COMT and SERT genes?
How about the orbitofrontal cortex, thalamus and caudate nucleus?
Basal ganglia?

My teacher's notes are really complicated and contain all the stuff I mentioned above. But when I look at the AQA textbook, GCP and savemyexams, it's not as detailed. I don't know what I'm supposed to know and what I don't need to memorise. Please help.
Reply 1
Hi, I just checked the spec and it doesn't say anything about learning them in any immense detail. However, I would recommend learning what role each of them play as they could be good points of knowledge in 16 markers that look at biological explanations. I'd just try to summarise key info.

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