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for identical its 6% for sepret its 10%
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Is Asperger's Syndrome more common in twins?
I have not seen any studies on whether twins are more likely to have an autism spectrum disorder than single-birth children. It is possible that no one has done research on this. If one identical twin has an autism spectrum disorder, there is approximately a 90% chance that the other identical twin will. They might not have the same autism spectrum disorder or they might have the same disorder at different levels of severity. Many studies show the chance that they both have it if one twin does as somewhere between 82% and 97%. If the twins are fraternal (non-identical) twins and one has an autism spectrum disorder, the other has about the same chance of having an autism spectrum disorder as non-twin siblings do, which is greater than the chance of having an autism spectrum disorder in a family that does not have any history of it.
What chromosome is autism on?
Yes. There is a link, but this does not mean it causes autism. However, there are some aspects of chromosome 1 that make it of interest in autism research. They do not describe it as causing autism, but instead as an autism susceptibility gene. Links to articles, abstracts, or reviews are in the "Related Links" section below.
Is autism axis II or axis III?
Axis I - autism spectrum disorders are considered mental health disorders
What are disorders associated with endorphins?
Autism..
Is there a word for twins who don't look alike?
Nonidentical twins Dizygotic twins (commonly known as fraternal twins, but also referred to as non-identical twins or biovular twins)
DyslexiaResearchers have found that the concordance rate for dyslexia among identical twins is approximately percent?
50%
Who would show more concordance for a chiefly hereditary trait?
fraternal twins
What are concordance rates?
The presence of the same trait in both members of a pair of twins.
Is Asperger's Syndrome more common in twins?
I have not seen any studies on whether twins are more likely to have an autism spectrum disorder than single-birth children. It is possible that no one has done research on this. If one identical twin has an autism spectrum disorder, there is approximately a 90% chance that the other identical twin will. They might not have the same autism spectrum disorder or they might have the same disorder at different levels of severity. Many studies show the chance that they both have it if one twin does as somewhere between 82% and 97%. If the twins are fraternal (non-identical) twins and one has an autism spectrum disorder, the other has about the same chance of having an autism spectrum disorder as non-twin siblings do, which is greater than the chance of having an autism spectrum disorder in a family that does not have any history of it.
What does research comparing the rates of schizophrenia in monochorionic twins and dichorionic twins suggest?
Concordance rates that suggested a role of genes in schizophrenia might more accurately be interpreted as a reflection of the influence of shared prenatal experience.
Is there a high rate of autism and Asperger's Syndrome?
It's relative. It depends on your opinion about what constitutes a high rate. The vast majority of people do not have autism or Asperger's Syndrome. It occurs in less than 1% of the population. There is a higher rate of cerebral palsy, but a lower rate of multiple sclerosis.
Is it possible for only one twin to develop autism?
Yes, it is possible. In one study, the chance that an identical twin has autism when the other does is 82%. That means that 18% of the identical twins did not have autism. It is much more likely that an identical twin will have autism if the other does than that a fraternal twin or other sibling will, but it does not happen every time.
What countries have the highest rate of autism?
I'm more than positive it would be the U.S.
Is there any genetic link in autism?
Yes, genetic influences on autism are believed to be 74%-98%. This figure comes from a large-scale research project on twins, where one twin was allistic and the other was Autistic. We do not know exactly what factors lead to autism, but as a normal human variant it was bound to be genetic.
What is incidence rate for autism?
Current diagnosis rate is 1 in 68 children in the US.Further statistics are harder to find, there's also question as to how correct the above statistic is. In theory Autism is under-diagnosed due to cultural and social factors such as stigma preventing parents seeking diagnosis, people avoiding diagnosis to avoid discrimination, and poverty preventing access to diagnosis. As it is we don't really know what the true rate of Autism is.
Is Autism autosomal?
Hi! That is a very difficult question to answer as there are a huge number of genes that cause Autism and there are likely some that haven't been discovered. There is a sex link with Autism (it affects boys at a rate of 1:42 and girls at a rate of 1:189) but despite this most scientists will try to make it easier to understand they will tell you that it is autosomal.
Why do psychologists study twins?
Twins studies are normally conducted to further support or reject biological influences on a life forms (not just human) development in many areas, some of which are: mental illness, intelligence and behaviour. If a concordance rate is higher on a twin study when compared to a non-twin study, the results can suggest that there is a biological link in the area they are researching. This is due to twins sharing the same genes so it is assumed that if one twin is intelligent or suffers from a mental illness, the other twin would have it too as they share the same DNA. Although research (not only on twins, but family relations of any possible kind that is biological) has suggested that there is a biological link in many areas, the concordance rates are never 100%, therefore environmental explanations are often used to accompany biological explanations.
