Chapter 3

Chapter 3 - Chapter 3: Models of Abnormality Paradigm...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 3: Models of Abnormality Paradigm (model): outlines basic assumptions, gives order to a field of study and gives guidelines to explain the phenomena Biological Model Sees physical processes as the key to human behavior Abnormal behavior is an illness brought on by malfunctioning parts of the organism Brain Anatomy and Abnormal Behavior o Brain is made up of nerve cells called neurons and support cells called glia o Bottom of the brain is known as hindbrain which is made up of regions called the medulla, pons and cerebellum o Middle of the brain is called the midbrain o Top is called forebrain which consists of the cerebrum, thalamus and hypothalamus o Clinical researchers have discovered connections between certain psychological disorders and problems in specific parts of the brain Brain Chemistry and Abnormal Behavior o Psychological disorders can be related to problems in the transmission of messages from neuron to neuron o Information is received by a neurons dendrites, from there it travels down the axon and finally transmitted to other neurons through the nerve endings o Synapse: A tiny space between neurons where messages must travel across o Neurotransmitter: Chemical released when an electrical impulse reaches a neurons ending, it travels across synapse to receptors on the dendrites of another neuron o Certain disorders have been linked to low or excessive activity of neurotransmitters o Some disorders have been related to abnormal activity in endocrine system o Endocrine glands work with neurons to control activities like growth, reproduction, heart rate and energy. Glands release hormones into the bloodstream Genetics and Abnormal Behavior o Abnormalities in brain anatomy or chemistry are sometimes inherited o Each cell in the brain and body has 23 pairs of chromosomes with each chromosome in a pair inherited from a parent o Genes: Segments that control characteristics and traits a person inherits, each cell has between 30k-40k genes o Inheritance plays a part in mood disorders, schizophrenia, mental retardation, Alzheimers and other mental disorders. No specific genes have been identified. Evolution and Abnormal Behavior o Mutation: Abnormal form of the appropriate gene that emerges by accident o Some theorists believe many genes that contribute to abnormal functioning are the result of normal evolutionary principles Viral Infections and Abnormal Behavior o Viral infections are another possible source of abnormal brain structure or biochemical disfunctioning Biological Treatments o Three leading kinds of biological treatments are drug therapy, electroconvulsive therapy and neurosurgery o Psychotropic Medications: Drugs that mainly affect emotions and thought processes Anti- anxiety drugs: Also called minor tranquilizers and anxiolytics help reduce tension and anxiety Antidepressant drugs: Help improve the mood of people who are depressed Anti-bipolar drugs: Also called mood stabilizers help stabilize the...
View Full Document

Page1 / 16

Chapter 3 - Chapter 3: Models of Abnormality Paradigm...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online