Biological explanation 0.0 / 5 ? PsychologyDepressionA2/A-levelAQA Created by: bethdobson6Created on: 13-06-16 14:52 Why must depression have a biological basis? Support from scientific research 1 of 20 Who suggested the four aspects that support the belief in a biological basis? Hemmen 2 of 20 What are the four aspects? Physical symptoms, appears to run in families, success of anti-depressants, injury or medication that gives rise to depression 3 of 20 What are the two biological explanations? Genetic influence and neurotransmitter dysfunction 4 of 20 What are the two neurotransmitters which influence depression Dopamine and nor-adrenaline 5 of 20 Is nor-adrenaline and serotonin too high or low Too low 6 of 20 What do post-mortem studies show about nor-adrenaline? Increased density 7 of 20 What drug confirms the association between depression and serotonin? SSRI's 8 of 20 What percentage of relatives of people with depression also have depression? 20% 9 of 20 What percentage of the population have depression 10% 10 of 20 What is the concordance rate between identical twins? 46% 11 of 20 What is the concordance rate between Dz twins? 20% 12 of 20 What can genes act as? Diathesis 13 of 20 How can relatively low concordance rates be explained? Co-morbidity 14 of 20 What two mental disorders did Keller look at when studying co-morbidity? Depression and G.A.D 15 of 20 How do drugs confirm link between nor-adrenaline and depression? Drugs that lower nor-adrenaline bring about depressive states while those that increase nor-adrenaline show anti-depressant effects 16 of 20 What was the response of patients who were treated with a dual serotonin-nor-adrenaline-re-uptake inhibitor compared to those treated with a placebo? Positive 17 of 20 Why isn't the link between serotonin and depression straight forward? Lowering serotonin levels results in depression although it doesn't induce depression in all people 18 of 20 What theory supports the view that depression has a genetic basis? Evolutionary 19 of 20 How might depression be adaptive? Others in social network provide support to strengthen indivudal 20 of 20
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