Essays Tagged: "Twin"

The bio-psychological approaches to understanding mental events and behaviour result in more conclusive findings than using a social approach and/or examining environmental factors. Discuss.

netic factors in unipolar depression, but reasonable strong evidence in bipolar (manic) depression. Twin studies provide rather convincing evidence. Price (1968) looked at 7 twin studies and found a m ... studies and found a much higher concordance rates for manic depressive psychosis in identical (MZ) twins than in non-identical (DZ) twins. The most revealing factor was that the concordance rate for ...

(9 pages) 221 2 3.9 Apr/2003

Subjects: Social Science Essays > Psychology

"Dead Ringers" directed by David Cronenberg. Plot summary and psychonanalysis.

that can be read from a psychoanalytical perspective. "Dead Ringers" centres around identical male twins named Elliot and Beverly, of whom are set up as contrasting personalities. This essay is looki ... at them through the Sedgwick triangle, the boundaries between self and other.Elliot is the outgoing twin, the one who lectures, accepts awards and also gets all the women, of whom he then passes on to ...

(2 pages) 74 3 4.0 Nov/2003

Subjects: Literature Research Papers > European Literature

Cloning can be a very sensitive subject. It seems that it?s a battle betweenscience and ethics.

s, some insects, algae, unicellularorganisms that conduct mitosis or binary fissions, and identical twins are allclones of each other. As long as genetic make-up is the same they are clones,and a spli ... e-up is the same they are clones,and a splitting embryo that creates two identical embryos produces twins. Thedifference between twins and clones, however, is that twins are new in geneticvariation an ...

(5 pages) 80 0 4.4 Jan/2004

Subjects: Science Essays > Genetics & Genome Projects

Describe and discuss two possible causes of schizophrenia (one biological, one psychological) suggested by psychologists, making reference to empirical evidence in your answer.

e between the genetic influences and environmental influences.Many studies have been carried out on twins to compare the consistency rates for MZ (identical) and DZ (non-identical) twins. All the stud ... non-identical) twins. All the studies have shown that there is a much higher consistency rate in MZ twins than DZ twins. However, twins share the same environment so it could be argued that it was the ...

(6 pages) 80 0 4.0 May/2005

Subjects: Social Science Essays > Psychology > Common Disorders

What kinds of evidence do researchers draw on when considering the effects of nature and nurture on personality?

inherited (genetically) and the percentage remaining is the environmental contribution.The study of twins is the most commonly used design in behavioural genetics .Monozygotic (MZ)twins developed from ... gotic (MZ)twins developed from a single fertilized ovum and possess identical genes. Dizygotic (DZ) twins develop from two separate fertilized ovums and have different genes. It would seem to indicate ...

(5 pages) 80 1 4.0 May/2006

Subjects: Social Science Essays > Psychology

Heredity and Hormones

ll as genetics and behavior. To study genetics and behavior in humans scientist use family studies. Twin studies in identical twins establish similarities genetic and behavioral in sibling with the ex ... blish similarities genetic and behavioral in sibling with the exact same genetic make up. Fraternal twins are only as similar as regular siblings. Adoption studies help scientist to see the difference ...

(3 pages) 117 0 4.0 Dec/2006

Subjects: Science Essays > Biology > Human Biology

Biology of crime

d arson) have been diverse and unpredictable.There have been numerous studies rendered on identical twins and adopted children toarbitrate behavioural patterns. What the opted outcome from this resear ... bitrate behavioural patterns. What the opted outcome from this research was to analyze theidentical twins who share identical genes and analyze these with non identical twins who do not, itwas expecte ...

(4 pages) 52 0 5.0 Mar/2007

Subjects: Law & Government Essays > Law > Issues

"The Doomsday Book" by Connie Willis: Colin and Agnes

When I was younger, I wanted to have an identical twin. I always figured that by having a sibling who shared the same DNA as me, I could tell what I w ... asily comparable. The two characters, though from different time periods, truly are ‘identical twins.’Works CitedWillis, Connie. Doomsday Book.New York: Bantam Books, 1993.

(3 pages) 25 0 4.0 Mar/2007

Subjects: Literature Research Papers > North American

Describe the biological explanation of crime. Identify key aspects of crime that are hard to identify in this way.

passed onto the child.There has been extensive research in this field, most notably in the study of twins and adopted children. Research by K.O. Christiansen, has shown that identical twins are far mo ... e far more likely to share the same personality traits and criminal inclinations than non identical twins and siblings, reinforcing the theory that criminal tendencies are in ones genetic make up (ide ...

(3 pages) 36 0 3.7 May/2007

Subjects: Social Science Essays > Psychology

The Factors Associated With Adolescent Depression

onents to adolescent depression. The studies held on genetic inheritance use fraternal or identical twins to determine genetic implications. A study done by Price (2000) found that identical twins hav ... ether genetics plays into adolescent depression. Price conducted a study questioning "if one of the twins had depression what is the likelihood of the other to develop depression?" He found that ...

(8 pages) 48 0 5.0 May/2001

Subjects: Social Science Essays > Psychology

Does Personality Has A Genetic Basis?

logical theories about personality are how genetics and environment affects personality. The use of twin studies in genetic research and what implications genetic research of personality will have for ... racteristics and even some facial expressions.3 For studying genetic differences, researchers found twin studies very useful.11 Identical twins share a home environment and have the same genetic makeu ...

(7 pages) 102 1 3.7 Feb/2008

Subjects: Social Science Essays > Psychology

I'll Be Seeing You

amazed about this. One lady had been artificially implanted with embryos. She had identical twins, and had one but preserved the other for when the other one was raised. Meghann asked if she c ...

(2 pages) 680 0 0.0 Feb/2008

Subjects: Art Essays > Film & TV Studies > Film Review and Analysis


n IQ's.Some psychologists believe that intelligence is strongly affected by heredity. In a study of twins, psychologist tested the IQ's of fraternal twins and their scores came out very similar. This ... and their scores came out very similar. This states that intelligence is not hereditary because the twins came from two separate eggs and they are no more genetically alike than ordinary brothers and ...

(2 pages) 50 1 5.0 Feb/2008

Subjects: Social Science Essays > Psychology > Psychological Theories & Authors

Born To Smoke: Ties Between Genetics and Cigarette

ty of heritability in conjunction with smoking by examining the habits of several sets of identical twins (Krogh 116). The 1962 study set a new precedent, suggesting for the first time smoking was not ... rely a question of nurture rather than nature, and its results have been replicated numerous times. Twin studies have continued in the present day to provide a conclusive and stunning link between tob ...

(8 pages) 19 0 0.0 Feb/2008

Subjects: Social Science Essays > Controversial Issues > Drugs & Alchohol

Alcoholism: Nature vs. Nurture

vironment. To differentiate between the effects of nature versus nurture, scientists have conducted twin and adoption studies. Both identical and fraternal twins share environmental influences to a si ... ces to a similar extent, but they differ in the amount of genetic information they share. Identical twins have the same set of genes, where as fraternal twins share about half of their genes. If there ...

(4 pages) 19 0 1.0 Mar/2008

Subjects: Literature Research Papers

Heredity, the Environment, and Development

along with proposed answers and explanations.Behavioral GeneticsBehavioral geneticists uses family, twin and adoption studies as a basis for their argument of individual differences (Lerner, Bearer, G ... ition: "Behavioral genetics is the genetic study of behavior, which includes quantitative genetics (twin and adoption studies) as well as molecular genetics (DNA studies) of human and animal behavior ...

(7 pages) 79 0 1.0 Apr/2009

Subjects: Social Science Essays > Psychology > Psychological Theories & Authors

Heredity, the Environment, and Development

ho seek to understand traits that enhance the human race and those that are harmful (Lehrman, 1998).Twin StudiesIdentifying traits that are beneficial and those that are harmful is just the first of m ... nces and environments are intricately influenced by genetic predispositions. For example, identical twins both are born taller than average. When they complete surveys for behavioral geneticists, they ...

(6 pages) 70 0 0.0 Jun/2009

Subjects: Humanities Essays > Philosophy > Modern Philosophy

Is Criminality More Influenced by Genes or Environment?

ior is driven more by genes than environment; especially when one considers the in-depth studies of twins, adoption, family history and laboratory experiments.In 2001, psychologist Jay Joseph declared ... re more influenced by genetics than a person's environment.First, psychologists refer to studies of twins, where a comparison is made between identical twins and fraternal twins regarding the rate of ...

(6 pages) 44 0 5.0 Feb/2010

Subjects: Social Science Essays > Psychology


(6 pages) 86 0 0.0 Jun/2010

Subjects: Social Science Essays > Psychology

An analysis to investigate the extent of the influence of environmental and genetic factors on intelligence

IQ. In another study, intelligence has been found to be more highly correlated between monozygotic twins than between dizygotic twins. For example, the average intelligence correlation of monozygotic ...

(5 pages) 5 0 0.0 Jan/2013

Subjects: Social Science Essays > Psychology