Q. Effect of heredity and environment on the development of personality. Ans. What is Personality? Personality can be defined as a dynamic and organized set of characteristics possessed by a person that uniquely influences his or her cognitions‚ motivations‚ and behaviors in various situations. Some say that personality is inherited or hereditary. Some raised the idea that it is environment that shapes one’s personality. Both are correct‚ many studies have shown that both heredity and environment
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abnormal behaviour. To do this the majority of psychologists use twins. It has been demonstrated that first-degree relative of a person suffering schizophrenia have a 10% chance of developing the disorder. This is much greater than the 1% in the normal population. Gottesman used a meta-analysis of about 40 twin studies and found that the concordance rate for schizophrenia was 48% in monozygotic twins however only 17% in dizygotic twins which proves that some abnormal behaviours are genetically inherited
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involved. Gottesman also looked at schizophrenics whose father had an identical twin. He found that there was a 17% of being schizophrenic when the father was but he also found that there was also 17% chance of developing the disease when the father’s twin had schizophrenia but the father didn’t. MZ twins share 100% of their genes; DZ twins share 50% of their genes. If genes are a factor we would expect more identical twins to share the disorder than non-identical. Rosenthal took a case study which
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genetics as an explanation of eating disorders is based on establishing whether these disorders ‘run in families’. Investigations were carried out on twins‚ both identical (MZ) and non-identical (DZ). In identical twins there was a high concordance rate in anorexia with both of the twins getting the disorder. They were not as high with non-identical twins and in bulimia there was 0% concordance. This indicated that there was a genetic factor involved‚ but also others such as the environment; otherwise
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aggression The use of twin studies helps explain how there could be genetic factors in aggressive behavior. There are two types of Twin‚ monozygotic (identical) and Dizygotic (non-identical). If both types are studied in terms of aggression and the M-Z twins are more similar in aggressive behaviour it would suggest there is a genetic influence on aggression. Coccaro et al found that when comparing MZ and DZ twins‚ over 50 % of variance in aggressive behaviours between MZ twins could be attributed to
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ADHD-related symptoms in violent offenders (Retz et al 2003). The role of genetic factors in aggression can be tested in twin studies. Genes are identical in sets of monozygotic twins but are different between sets of dizygotic twins‚ meaning that if monozygotic twins are more alike in terms of aggression than dizygotic twins are‚ this similarity can be attributed to genetics. These twin studies have generally found that almost 50% of variance in aggressive behaviour can be attributed to genetic factors
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HUMAN GROWTH AND DEVELOPMENT DEVELOPMENT Progressive series of change that occur as a result of maturation and experience. Qualitative change is the sequential and continuous process of change in any direction. Progressive Growth Changes are directional‚ leading to something positive. Quantitative change in size and structure-an increase in magnitude-in body size‚ intellectual ability or even social traits Types of Changes in Development Change in size – there is a change in physical and mental
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? Boy friend‚ best friend Nah. To all those who were thinking these back in there head let me tell you guys - you are wrong. Well‚ it’s my brother and to be precise my twin. It’s double the giggles‚ double the grind‚ double the happiness and double the trouble if you are blessed with it and my mom was proven to be lucky. Twins are two off Spring produced by the same
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brain structures. The first explanation for schizophrenia is genetic factor. Researchers have done many studies in different kind of ways in order to study genetic inheritability disorder‚ such as schizophrenia. The studies include family studies‚ twin studies and adoption studies. Family studies would investigate individuals who have schizophrenia and determine if their biological relatives are also affected more often than non-biological relatives. The most famous schizophrenic’s family study was
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Lying Game Author: Sara Sheperd Pages read: 307 Pages in book: 307 1. Main Characters: A) Emma- Emma has a long-lost twin sister‚ Sutton‚ who is dead. Emma is very curious and cautious. She is impersonating Sutton because Sutton’s killer is forcing her to. B) Sutton- Emma is Sutton’s long-lost/ dead twin sister. Sutton was high maintenance‚ curious‚ sometimes cruel‚ and gets jealous pretty easily. 2. Minor
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