AP7_Lecture_Ch03

AP7_Lecture_Ch03 - Models of Abnormality Chapter 3 Slides...

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Comer,  Abnormal Psychology , 7e Slides & Handouts by Karen Clay Rhines, Ph.D. Northampton Community College Models of Abnormality Chapter 3
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2 Comer, Abnormal Psychology, 7e Models of Abnormality In science, the perspectives used to explain events  are known as models or paradigms Each spells out basic assumptions, gives order to the field  under study, and sets guidelines for investigation Models influence what investigators observe, the  questions they ask, the information they seek, and how  they interpret this information
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3 Comer, Abnormal Psychology, 7e Models of Abnormality Historically, clinical scientists of a given place and  time tended to agree on a single model of abnormality  – a model greatly influenced by the beliefs of their  culture Today, several models are used to explain and treat  abnormal functioning Each model focuses on one aspect of human functioning  and no single model can explain all aspects of abnormality
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4 Comer, Abnormal Psychology, 7e The Biological Model Adopts a medical perspective Main focus is that psychological abnormality  is an illness brought about by malfunctioning  parts of the organism Typically focused on the brain
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5 Comer, Abnormal Psychology, 7e How Do Biological Theorists Explain  Abnormal Behavior? Brain anatomy  The brain is composed of ~100 billion nerve cells  (called neurons) and thousands of billions of  support cells (called glia) Within the brain, large groups of neurons form  distinct areas called brain regions
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6 Comer, Abnormal Psychology, 7e How Do Biological Theorists Explain  Abnormal Behavior? Brain anatomy and abnormal behavior Clinical researchers have discovered connections  between certain psychological disorders and  problems in specific brain areas Example: Huntington’s disease and basal ganglia  (forebrain)
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7 Comer, Abnormal Psychology, 7e How Do Biological Theorists Explain  Abnormal Behavior? Brain chemistry  Information is communicated throughout the brain  in the form of electrical impulses that travel from  one neuron to one (or more) others An impulse first is received at a neuron’s  dendrites, travels down the axon, and is  transmitted to other neurons through the nerve  endings
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8 Comer, Abnormal Psychology, 7e 8
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9 Comer, Abnormal Psychology, 7e How Do Biological Theorists Explain  Abnormal Behavior? Brain chemistry  Neurons do not actually touch each other; they are  separated by a space (the synapse), across which a  message moves When an electrical impulse reaches a nerve ending, the  ending is stimulated to release a chemical called a  neurotransmitter  (NT), that travels across the synaptic 
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AP7_Lecture_Ch03 - Models of Abnormality Chapter 3 Slides...

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