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Tag: twins

April 2015
News

Genes dwarf environment in autism’s origins, study says

by  /  6 April 2015

The genetic makeup of an individual plays much a bigger role than environmental factors in whether he or she develops autism, according to one of the largest twin studies to date.

23 Comments
News / Toolbox

New video test assesses toddlers’ subtle social growth

by  /  1 April 2015

A 20-minute test enlists parents in gauging a toddler’s social development by showing them a video of how a typically developing child acts.

0 Comments
October 2014
Opinion

Restricted behaviors link autism, attention deficit

by ,  /  10 October 2014

Restricted behaviors in autism represent a genetic link with inattention and hyperactivity in attention deficit hyperactivity disorder, say Tinca Polderman and Henrik Larsson.

11 Comments
September 2014
News

Roots of language troubles, autism traits may diverge

by  /  15 September 2014

The genetic and environmental factors that underlie difficulties with language differ from those that influence other autism traits, according to a new study of more than 3,000 twin pairs. The study, published 2 August in the American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, suggests that difficulty with language is not a core symptom of autism.

6 Comments
July 2014
News

Common mutations account for half of autism risk

by  /  21 July 2014

Common genetic variants that have minor effects may contribute about half the risk of developing autism, according to a study published Sunday in Nature Genetics. Identifying these variants would require tens of thousands of samples.

13 Comments
News

Maternal factors, birth order up autism risk

by  /  17 July 2014

Having one child with autism raises the odds of having a second child with the disorder 20-fold, according to one of the largest epidemiological studies so far to address the inheritance of autism risk.

4 Comments
News

Molecular mechanisms: Patterns of DNA tags altered in autism

by  /  8 July 2014

Children with autism have atypical patterns of epigenetic modifications — chemical tags on DNA that influence gene expression, suggests a study published 29 May in PLOS Genetics.

1 Comment
June 2014
Opinion / Cross Talk

What constitutes ‘environmental’ risk for autism?

by  /  11 June 2014

If inherited risk for autism is 50 percent, does that make the remaining half of risk environmental? Scientists clarify a large population study.

16 Comments
May 2014
News

Environment, genetics may contribute equally to autism risk

by  /  22 May 2014

A large study of autism in Swedish families suggests that about half of the risk for autism comes from genetics and the other half from environmental factors, researchers reported 7 May in The Journal of the American Medical Association. However, the mathematical model the study used may not be appropriate for evaluating autism risk, experts say.

19 Comments
Opinion

Twin study set to explore autism, attention deficit overlap

by  /  16 May 2014

A Swedish twin study plans to search for the shared genetic and environmental origins of autism and attention deficit hyperactivity disorder, which are often mistaken for each other.

4 Comments