Biological Approach To Explaining OCD Flashcards
What did Lewis find in OCD patients?(inheritance)
37% had parents with the disorder and 21% of siblings
What does the diathesis stress model state?
Certain genes leave certain people more vulnerable
What are candidate genes?
Genes which create the vulnerability - some are important in the development of serotonin system
What is 5HT-D beta gene?
It is implicated in the efficiency of transport of serotonin across the synapse
What does polygenic mean?
That one gene is not responsible but several are involved
What has Taylor analysed?(polygenic)
Findings from previous studies
What has Taylor found?
Evidence that 230 genes may be involved
How are there different types of OCD?
As one gene may be associated with OCD in one person but another may suffer due to many genes
What does aetiologically heterogenous mean?(different types of OCD)
The origin of OCD is due to different causes
What are genes associated with OCD likely to affect?(neural explanation)
The key neurotransmitters as well as structures of the brain
What might some cases of OCD be explained by?
A reduction in the functioning of the serotonin system in the brain
