Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Finger length helps predict SAT exam results

23.05.2007
The results of numeracy and literacy tests for seven-year-old children can be predicted by measuring the length of their fingers, shows new research.

In a study to be published in the British Journal of Psychology, scientists compared the finger lengths of 75 children with their Standardised Assessment Test (SAT) scores.

They found a clear link between a child’s performance in numeracy and literacy tests and the relative lengths of their index (pointing) and ring fingers.

Scientists believe that the link is caused by different levels of the hormones testosterone and oestrogen in the womb – and the effect they have on both brain development and finger length.

“Testosterone has been argued to promote development of the areas of the brain which are often associated with spatial and mathematical skills,” said Dr Mark Brosnan, Head of the Department of Psychology at the University of Bath, who led the study.

“Oestrogen is thought to do the same in the areas of the brain which are often associated with verbal ability.

“Interestingly, these hormones are also thought have a say in the relative lengths of our index and ring fingers.

“We can use measurements of these fingers as a way of gauging the relative exposure to these two hormones in the womb and as we have shown through this study, we can also use them to predict ability in the key areas of numeracy and literacy.”

The researchers made photocopies of the palm of the children’s hands and then measured the length of their index finger and ring finger on both hands using callipers, accurate to 0.01mm.

They then divided the length of the index finger by that of the ring finger – to calculate the child’s digit ratio.

When they compared this ratio to the children’s SAT scores, they found that a smaller ratio (i.e. a longer ring finger and therefore greater prenatal exposure to testosterone) meant a larger difference between ability in maths and literacy, favouring numeracy relative to literacy.

When they looked at boy’s and girl’s performance separately, the researchers found a clear link between high prenatal testosterone exposure, as measured by digit ratio, and higher numeracy SAT scores in males.

They also found a link between low prenatal testosterone exposure, which resulted in a shorter ring finger compared with the index finger, and higher literacy SAT scores for girls.

This, says the scientists behind the study, suggests that measurements of finger length could help predict how well children will do in maths and literacy.

“We’re not suggesting that finger length measurements could replace SAT tests,” said Dr Brosnan.

“Finger ratio provides us with an interesting insight into our innate abilities in key cognitive areas.

“We are also looking at how digit ratio relates to other behavioural issues, such as technophobia, and career paths.

“There is also interest in using digit ratio to identify developmental disorders, such as dyslexia, which can be defined in terms of literacy deficiencies.”

Andrew McLaughlin | alfa
Further information:
http://www.bath.ac.uk/news/2007/5/23/fingerlength.html

More articles from Studies and Analyses:

nachricht Obstructing the ‘inner eye’
07.07.2017 | Friedrich-Schiller-Universität Jena

nachricht Drone vs. truck deliveries: Which create less carbon pollution?
31.05.2017 | University of Washington

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

Im Focus: On the way to a biological alternative

A bacterial enzyme enables reactions that open up alternatives to key industrial chemical processes

The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....

Im Focus: The 1 trillion tonne iceberg

Larsen C Ice Shelf rift finally breaks through

A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...

Im Focus: Laser-cooled ions contribute to better understanding of friction

Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision

Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Closing the Sustainability Circle: Protection of Food with Biobased Materials

21.07.2017 | Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

 
Latest News

NASA looks to solar eclipse to help understand Earth's energy system

21.07.2017 | Earth Sciences

Stanford researchers develop a new type of soft, growing robot

21.07.2017 | Power and Electrical Engineering

Vortex photons from electrons in circular motion

21.07.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>