Abnormal Disorder Etiology

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Author:
victoriaahn1
ID:
232533
Filename:
Abnormal Disorder Etiology
Updated:
2013-09-02 22:12:45
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Abnormal Disorder
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Abnormal Disorder etiology
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  1. Genetics
    • Investigated through family studies, mainly of monozygotic (identical) and dizygotic (fraternal) twins, often in the context of adoption. Monozygotic twins should be more likely than dizygotic twins to have the same disorder because they share 100% of their genetic material, whereas dizygotic twins share only 50%. For many disorders, this is exactly what research shows. But given that monozygotic twins share 100% of their genetic material, it may be expected of them to have the same disorders 100% of the time, but in fact they have the same disorders only about 50% of the time
    • These studies allow calculation of a heritability coefficient.
  2. Biological Causal Factors
    • Neurotransmitter [imbalances of neurotransmitters like (1) Norepinephrine (2) Dopamine (3) Serotonin and (4) GABA (Gamma aminobutryic acid)] and hormonal imbalances in the brain
    • Genetic vulnerabilities
    • Constitutional liabilities [physical handicaps and temperament]
    • Brain dysfunction and neural plasticity
    • Physical deprivation or disruption [deprivation of basic physiological needs
  3. Socio-Cultural Factors
    Effects of urban/rural dwelling, gender and minority status on state of mind
  4. Systemic Factors
    • Family systems
    • Negatively Expressed Emotion playing a part in schizophrenic relapse and anorexia nervosa.
  5. Biopsychosocial Factors
    Illness dependent on stress "triggers"

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