Cornell Notes: Psychopathology
Cues / Prompts
- What is OCD?
- What is the biological explanation of OCD?
- What are COMT and SERT genes?
- What part of the brain is involved in OCD?
- What research supports the genetic explanation?
- AO3: Strengths of biological explanation?
- AO3: Weaknesses of biological explanation?
Notes
OCD is an anxiety disorder characterized by repetitive thoughts (obsessions) and behaviours (compulsions).
The biological explanation includes genetic and neural components. Genes may create a vulnerability; abnormalities in neurotransmitters and brain structure are implicated.
COMT gene affects dopamine levels; SERT gene impacts serotonin — both associated with OCD symptoms.
The Orbitofrontal Cortex (OFC) is overactive in OCD, linked to decision-making and worry.
Nestadt et al. (2010): 68% concordance in MZ twins vs. 31% in DZ twins for OCD.
Strengths (AO3): Supported by empirical evidence like brain scans and twin studies. High scientific credibility.
Weaknesses (AO3): Reductionist — ignores environment. Gene expression doesn't always result in disorder. Suggests gene-environment interaction.
Summary
I understand how OCD can be explained biologically using genes and brain structure. COMT/SERT and OFC are key elements. Still need to practice applying AO3 to 16-mark questions and add more studies like Nestadt.
AI-Enhanced Learning Disconnected
This note is stored in Pinecone vector database for semantic search and AI-powered recommendations.