PSYCH 215 Chapter Notes - Chapter 12.2: Genetic Linkage, Prenatal Development, Antipsychotic
17 Apr 2017
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Diathesis- stress relationship: people with biological predisposition will develop schizophrenia only if certain kinds of events or stressors are also present. Some people inherit biological predisposition to schizophrenia and develop the disorder later when they face extreme stress, usually during late adolescence or early adulthood. Schizophrenia is more common among relatives of people with the disorder and more closely the related the greater likelihood of developing the disorder. 48% chance of identical twins, concordance (both having disorder) Similarities of disorder in adoptive relative family members would be environmental influences. Dopamine hypothesis: certain neurons that explain their findings on schizophrenia: certain neurons that use the neurotransmitter dopamine fire too often and transmit too many messages. Enlarged ventricles: tend to experience a poorer social adjustment prior to the disorder. Brain abnormalities may result from exposure to viruses before birth. Babies born during winter months more likely to be exposed to influenza. Antibodies found in the blood of 40% of research participants.
