EXPLANATIONS OF OCD 0.0 / 5 ? PsychologyObsessive compulsive disordersA2/A-levelAQA Created by: sophiaa_taylorCreated on: 15-04-16 12:10 what did a study on 343 family and relatives show? that 80 of the first degree relatives also had ocd 1 of 16 what did meta analysis of 14 twin studies find monozygotic twins were twice as likely to have ocd if their twin has it 2 of 16 The high amounts of the COMT gene is linked to a decrease in OCD,why? because it terminates the action of dopamine which can cause the obsession through overactivity 3 of 16 Abnormal levels of neurotransmitters can cause an increase in the likelihood of having ocd, state the two main neurotransmitters invloved? serotinin and dopamine 4 of 16 does and increase or decrease in serotonin cause ocd? decrease 5 of 16 do antidepressants increase or decrease serotonin levels? increase which reduces the anxiety which stimulates an obsession 6 of 16 what concordance rates were found between twins with OCD? 87% concordance between MZ twins only 13% environmental 7 of 16 name an alternative gene to the COMT gene and what it showed? the SAPAP3 gene which showed and increase in grooming with mice 8 of 16 give an example of physiological evidence to support OCD being biological? PET scan showed that people with OCD have an increased metabolism of glucose in the OFC loop of the brain 9 of 16 whats the alternative to a biological approach evolutionary 10 of 16 name 3 behaviours that result as evolutionary adaptations grooming, concern for others, hoarding 11 of 16 give a strategy which has developed as an evolutionary adapatation harm avoidance strategy 12 of 16 give the 3 main psychological explanations of ocd? behavioural, cognitive, psychodynamic 13 of 16 which researcher was the psychodynamic approach based upon? Freud 14 of 16 what did freuds theory suggest about ocd that it is learnt from a young age when a fixation occurs 15 of 16 what two factors explain the behaioural approach conditioning to create obsessions, reinforcement of compulsions to reduce anxiety 16 of 16
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