Table of Contents
What are the biological explanations for schizophrenia?
The Dopamine Hypothesis was proposed by Arvid Carlsson and suggests that schizophrenia is caused by too much dopamine – or too many dopamine receptors – in key areas of the brain. Dopamine systems in the mesolimbic pathway may contribute to the positive symptoms of schizophrenia (such as hallucinations).
What is one biological explanation for schizophrenia 4 marks?
One biological explanation for Schizophrenia is the Dopamine hypothesis. This proposes the idea that here is an excess amount of D2 receptors that causes the brain to release more dopamine as it believes more is needed.
What are the biological factors that influence the development of psychopathology?
Biological Contributions to Mental Disorders As discussed on the previous page, biological elements such as genetics, brain structures, the endocrine system, and neurotransmitters all play an important role in the development of mental disorders.
What chemical imbalance causes schizophrenia?
Some research suggests that an imbalance between certain neurotransmitters, including dopamine and serotonin, may be one of the causes behind schizophrenia. Antipsychotics, which are sometimes used to treat schizophrenia, can help to lower dopamine levels. For more information see our pages on antipsychotics.
What are the three explanations for schizophrenia?
Of the three theories (genetic, neurodevelopmental, and neurobiological theories), which theory is the right answer regarding the etiology of schizophrenia may be difficult, because each theory may emphasize a different aspect of the disease.
What are the biological factors that influence?
Biological factors include genetic influences, brain chemistry, hormone levels, nutrition, and gender. Here is a closer look at nutrition and gender and how they affect development.
What are two biological influences of psychological disorders?
Biological factors include genetics, prenatal damage, infections, exposure to toxins, brain defects or injuries, and substance abuse.
What are the biological factors that influence behavior?
The biological basis of behavior is an important field of study in psychology that explores the ways in which biological factors impact behavior. This includes investigating the roles that genetics, hormones, and the nervous system play in shaping an individual’s behavior.
Is schizophrenia a genetic risk?
A large Danish study of twins found that schizophrenia is about 79% heritable. In other words, 79% of the risk of developing schizophrenia is due to genetic factors.
What chromosome has the genetic mutation for schizophrenia?
Chromosome 22q11. 2 microdeletions provide the most convincing evidence of an association between a molecular cytogenetic abnormality and schizophrenia.
Is schizophrenia a chemical?
Schizophrenia is caused by a chemical imbalance and other changes in the brain. It tends to run in families, but the environment may also play a role. While it affects men and women the same, symptoms tend to start earlier in men than in women.
What are biological explanations of psychopathology?
Biological psychopathology attempts to explain psychiatric disorders using multiple levels of analysis from the genome to brain functioning to behavior.
What biological factors help to explain the development of psychological disorders?
Elevated or depleted levels of certain hormones may be responsible for some of the symptoms seen in psychological disorders. For example, elevated levels of cortisol, a stress hormone, interfere with learning and memory as well as increase the risk of depression.
What is the biological perspective of psychopathology?
The biological perspective views psychological disorders as linked to biological phenomena, such as genetic factors, chemical imbalances, and brain abnormalities; it has gained considerable attention and acceptance in recent decades (Wyatt & Midkiff, 2006).
How do biological factors influence development?
Biological factors that can affect a child’s growth include a number of elements, for example, genetic influences, the level of nutrition, exposures during the prenatal period. Before birth, a baby acquires genes from both parents, which determine whether a newborn has any hereditary diseases.