Biological Explanation/approach

Question 1

What is the COMT gene?

Answer 1

Production of hormone, regulates dopamine production

Question 2

What did turkel et al (2003) find? (OCD)

Answer 2

OCD linked to low activity of COMT gene and high dopamine levels

Question 3

What is the SERT gene?

Answer 3

Linked to serotonin, low levels lead to OCD

Question 4

What did Ozaki et al (2003) find? (OCD)

Answer 4

Found mutation of SERT gene in family where 6/7 members had OCD

Question 5

What is the diathesis stress model (OCD)?

Answer 5

• OCD polygenic (linked to more than 1 gene)
• genetic vulnerability passed through generations but environmental stressor triggers disorder
• also linked to depression and PTSD

Question 6

What are the assumptions of the biological approach?

Answer 6

• behaviour caused by pheno/geno type
• behaviour can be inherited
• brain structure can explain behaviour

Question 7

What does concordance rates/twin studies show about the biological approach?

Answer 7

Not 100% do there are other factors

Question 8

Draw the nervous system

Answer 8

Nervous system

            Peripheral.                              Central 
                                                           Spine.     Back  Somantic               Autonomic.    
  Parasympathetic         Sympathetic

Question 9

What are the assumptions of the biological approach?

Answer 9

• behaviour caused by pheno/geno type
• behaviour can be inherited
• brain structure can explain behaviour

Question 10

What does concordance rates/twin studies show about the biological approach?

Answer 10

Not 100% do there are other factors

Question 11

Draw the nervous system

Answer 11

Nervous system

            Peripheral.                              Central 
                                                           Spine.     Back  Somantic               Autonomic.    
  Parasympathetic         Sympathetic