biological approach to explaining OCD

Question 1

genetic explanaition:

Answer 1

concordance in MZ compared to DZ twins suggests diathesis stress model:(Nestedat et al. 2010)
the existance of environmental risk factors: (Cromer et al 2007)
a behaviourist approach provides a credible alternative explanaition: (Albucher et al. 1988)

Question 2

neural explanaition: transmitters

Answer 2

SSRIs indicate neurotransmitters play a partial role: (Soomro et al. 2008)

Question 3

neural explanaition: 9regional brain function)

Answer 3

imaging is supported by multiple lines of biological evidence: Menzies et al: (2007), Maia et al (2008)