... on the behavior of the adolescent. Biologists on the other hand have studied the role of genetics and biochemistry in delinquency and criminal behavior. They have hypothesized that a certain genetic disorder (XYY) may be responsible for the reported high rate of criminal offenses committed by afflicted individuals. Another perspective to look at is that at least 10 percent of ... from brain injury due to physical trauma or drug effects. Other forms are probably due to environmental factors, psychological stress, or biochemical and genetic factors (Sander, 1991, p.4). It has been hypothesi...

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• Grade Level: Undergraduate

... attached to a chain of phosphate and deoxyribose; there are four nucleotide bases; adenine, thymine, guanine, and cytosine. It is the sequence of these bases on each chromosome that constitutes the genetic code (Pinel, 2000). The sequence of the bases form a sentence which is unique for each gene. Genes provide the instructions for the cell to produce the protein that is necessary ... problems with these genes can cause schizophrenia. We inherit our genes from our parents but this does not mean that the parents of a schizophrenic are mentally ill. Problems in the genetic make up of a pe...

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... may have multiple causes. Many scientists have developed lots of different theories to explain what causes this disease. The four main theories are The Environmental Theory, The Biochemical Theory, The Genetic Theory, and The Bio Psycho Social Theory. The Environmental Theory has little information to support it. The theory's main hypothesis is based on how stress affects humans. Most researchers think ... of mutation or it could have been a recessive gene. Scientists set out to prove this theory by doing studies on identical twins. You see, identical twins have the exact same genetic m...

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... theories to explain what causes this disease, but researchers are focusing on four leading theories. They are the Genetic Theory, the Environmental Theory, the Biochemical Theory, and the Bio-Psycho-Social Theory (Berkow). The Genetic Theory argues that schizophrenia is caused by traits in a person's genetic makeup. As we all know, a person has twenty-three pairs of chromosomes. Each pair contains one chromosome ... parent. In corresponding locations, called loci, of each chromosome the genes for specific traits are located. Some researchers believe that problems with these genes can ca...

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... a related spectrum disorder become even greater if both parents are diagnosed (Olin and Mednick, 1996). Numerous twin studies diagnosed with schizophrenia have been used to demonstrate the genetic link. However, twin studies have also evidenced environmental effects - for example, researchers were unable to locate matching phenotype expressions for the genetics hypothesized in twins concordant for ... International Congress on Schizophrenia Research, 1995). Such discrepancies highlight the complex, multi-determined etiology associated with this disorder. Autoimmune theories of schizophr...

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... premorbid neurodevelopmental abnormalities, more cytogenetic anomalies, and potentially greater family histories of schizophrenia and related spectrum disorders" (Kumra). This type of evidence suggests that children with schizophrenia have a much stronger genetic contribution toward the disorder than adults (Kumra). Patients with childhood-onset schizophrenia often have a poorer outcome in comparison to those who do not develop the disease until adulthood, especially in ... learned from children with this disorder when comparing them to adults suffering similar symptoms. If researchers...

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... twenties or early thirties. Children can also be affected with schizophrenia, however it is very rare. (nimh) It is thought that schizophrenia results from a combination of inherited genetic factors, external or environmental factors. In order for a person to develop schizophrenia, a number of different factors must come together. Scientists do not yet understand all of the ... 10 percent chance of inheriting the disease. By comparison, the risk of schizophrenia in the general population is about 1 percent. As scientists study the association between schizophrenia and genetic factors, it...

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... of schizophrenia or a child who has schizophrenic parent, has a 10 percent higher chance of developing the disorder then someone who does not. Nonetheless, there has been no specific gene within genetic factors that is shown to cause schizophrenia (Carey, Benedict 916). Another theory about the cause of schizophrenia are the idea that those who have schizophrenia have a different brain structure then ... 916). Dopamine creates a sense of well being, but has deficiency in some brain area (Shier, David, Butler, Jackie, Lewis 380). In addition, in recent years researches have discovered th...

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... in CAT or MRI scans, are common among Schizophrenic patients, yet it is unknown if the structural changes are due to the disease or vise versa. There is a fairly strong genetic component, but in monozygotic twins the probability of both developing schizophrenia is only fifty percent. This indicates that the disease is not only biological but also environmental. Yet, it impossible ... to ignore the genetic risks. As mentioned earlier, the general population has a one- percent chance of developing the disease, but the percentages rise once the disease enters into a family.(Coloninger) Fir...

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... wrong. For one part it is good, but for another part it is bad, your child has just been diagnosed with Schizophrenia. Was your child born with this? Is this genetic? Contagious? What are the symptoms? Does this mean that your child will have a split personality? Schizophrenia is an odd diseases, although a very broad and complicated this is a brief summary of ... although it has been known to be a common brain disorder. According to Dr. Nancy Anderson, there are multiple factors of this disorder, which include changes in the chemistry, structure and genetic factors in the brain. Dr. An...

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... in day-to-day living- (Schizoaffective disorder). Schizoaffective disorder is thought to be caused by a chemical imbalance in the brain, and development of the disease is thought to come from genetic and environmental factors (Facts about schizoaffective disorder). Schizoaffective Disorder People with Schizoaffective disorder a "roller-coaster ride of symptoms- (Knowledge Base: Schizoaffective disorder). Schizoaffective disorder is defined as an: Illness during ... Mental Health Letter). Some schizoaffective patients experience symptoms between episodes, but generally, symptoms can be c...

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... for precautionary hazard to oneself. Causes There seems to be not one single cause for schizophrenia, but rather a multiple of factors. Scientists believe that schizophrenia is a biological disease caused by genetic factors, an imbalance of chemicals in the brain, or abnormalities in the prenatal environment. Also, a number of stressful events in a person's lifetime may contribute to the development of schizophrenia ... . Genetic Factors Research suggests that the genes one inherits, influences their risks of developing the disease. Family studies show that relatives having schizophrenia...

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... , and cry most of the time" (Gilman). The cause of schizophrenia is still to this day unknown. "However, it appears that schizophrenia usually results from a complex interaction between genetic and environmental factors" (Segal). In "The Yellow Wallpaper," the narrator's symptoms of her illness are rather shocking. She develops a relationship with the wallpaper in the room, totally ... ...

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... one identical twin develops schizophrenia, the other twin has about a 46% chance of having it as well (Wood). Still, most studies fail to identify the exact mechanism and location of genetic transmission, though they do identify possible genes and chromosomes. Because not all identical twins share the disease, and because people without familial history develop it, it is likely that there ... ...

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... accompanied in varying degrees by other emotional, behavioral, or intellectual disturbances. Schizophrenia is associated with dopamine imbalances in the brain and defects of the frontal lobe and is caused by genetic, other biological, and psychosocial factors. All these factors force the person to require medical attention constantly as they cannot face the daily tasks of their lives. Schizophrenics who also suffer ... ...

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... confines of their troubled minds. (Young, 1988) Schizophrenia appears to result not from a single cause, but from a variety of factors. Most scientists believe that schizophrenia is a biological disease caused by genetic factors, an imbalance of chemicals in the brain, structural brain abnormalities or abnormalities in the prenatal environment. In addition, stressful life events may contribute to the development of schizophrenia in ... ...

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... , close relatives of a schizophrenic individual are more likely to develop the disorder than is the population at large. Much evidence has demonstrated that schizophrenia can involve the inheritance of some genetic defect. For example, in the case of twins (who share exactly the same genes), when one twin is schizophrenic, the chances of the other twin becoming schizophrenic as well are ... ...

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... , and low thyroid levels have long been associated with depressionlike smptoms. Having a personal or family history of mood disorders also increases the odds of developing PPD, which points to a possible genetic factor( Social elements also play an important role in postpartum wellbeing. One important factor is a lack of social support, which includes poor relationship with others and insufficient childcare during the ... ...

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... and biology has come into question when it comes into the study of serial killers. Some killers like Bobby Joe Long and Richard Speck had extra X and Y chromosomes in their genetic structure. This defect was blamed in their serial killer life style. High testosterone and low serotonin levels also have contributed to psychological defectst that have led to serial killers. Heavy ... ...

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... return to normal behavior and more commonly they have continued patterns of the acute phases. The exact cause of schizophrenia is unknown. A brain chemical imbalance, brain disease or injury, or genetic predisposition may cause it. It is important to remember that it is a psychiatric problem that is not the patient's fault, the parents" fault, or a demonic pocession. Stress does not cause ... ...

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