Genes responsible for ability to recognize faces

Feb 22, 2010

(PhysOrg.com) -- The ability to recognise faces is largely determined by your genes, according to new research at UCL (University College London).

Published today in the , scientists found that identical twins were twice as similar to each other in terms of their ability to recognise faces, compared to non-identical twins.

Researchers also found that the genetic effects that allow people to recognise faces are linked to a highly specific mechanism in the brain, unrelated to other brain processes such as the ability to recognise words or abstract art.

" is a skill that we depend on daily and considerable variability exists in the ability to recognize faces. Our results show that genetic differences are responsible for the great majority of the difference in face recognition ability between people," said Dr Brad Duchaine from UCL's Institute of , a co-author of the paper.

The study consisted of 164 identical twins, who share all of their genes, and 125 non-identical same-sex twins, who share 50% of their genes. All the participants took the Cambridge Face Memory Test*, which measures ability to learn six faces and then recognise them in novel poses and lighting.

Scientists examined the similarity between scores for both types of twin pairs. The correlation for identical twin pairs was 0.70, whereas the correlation for non-identical twins was less than half that, at 0.29. This difference indicates that the similarity in identical twin pairs is due to their shared genes, rather than shared family environment.

"We are excited about this finding because the brain mechanisms carrying out face recognition are fairly well understood, meaning that the high heritability of face recognition could provide a good opportunity to connect genes to brain mechanisms and then to behaviour," added Dr Duchaine.

The study also investigated whether these brain processes were specific to recognising faces, or more general recognition processes. and a large cohort of non-twins did the Cambridge Face and two other tests; one which required recognizing previously learned words and the other required recognizing previously learned abstract art. The results showed that these abilities were only weakly related to face recognition ability.

Explore further: Study suggests targeting B cells may help with MS

More information: * An online version of the Cambridge Face Memory Test is available for members of the public to test themselves: www.faceblind.org/facetests/index.php

The paper 'Human face recognition ability is specific and highly heritable' is published online in Proceedings of the National Academy of Sciences today.

Related Stories

Face recognition ability inherited separately from IQ

Jan 19, 2010

(PhysOrg.com) -- Recognizing faces is an important social skill, but not all of us are equally good at it. Some people are unable to recognize even their closest friends (a condition called prosopagnosia), ...

Twins Study Looks at Genetic Influences on Thinking

Feb 16, 2010

(PhysOrg.com) -- A groundbreaking study by UT Dallas’ Center for Vital Longevity is focusing on twins in an effort to answer some long-debated questions about the rival influences of nature vs. nurture.

Are you phonagnosic?

Oct 27, 2008

The first known case of someone born without the ability to recognise voices has been reported in a paper by UCL (University College London) researchers, in a study of a rare condition known as phonagnosia. The UCL team are ...

Recommended for you

Study suggests targeting B cells may help with MS

6 minutes ago

A new study suggests that targeting B cells, which are a type of white blood cell in the immune system, may be associated with reduced disease activity for people with multiple sclerosis (MS). The study is released today ...

Paying closer attention to attention

4 hours ago

Ellen's (not her real name) adoptive parents weren't surprised when the school counselor suggested that she might have attention deficit hyperactivity disorder (ADHD).

User comments : 0

More news stories

Autism Genome Project delivers genetic discovery

A new study from investigators with the Autism Genome Project, the world's largest research project on identifying genes associated with risk for autism, has found that the comprehensive use of copy number variant (CNV) genetic ...

Study suggests targeting B cells may help with MS

A new study suggests that targeting B cells, which are a type of white blood cell in the immune system, may be associated with reduced disease activity for people with multiple sclerosis (MS). The study is released today ...

Study links California drought to global warming

While researchers have sometimes connected weather extremes to man-made global warming, usually it is not done in real time. Now a study is asserting a link between climate change and both the intensifying California drought ...