JAN 07, 2018 12:18 PM PST

Understanding Handedness

WRITTEN BY: Carmen Leitch

OOPS! THAT EXPERIMENT FAILED...

It's not your fault! Something went wrong with our formula.
Please begin your experiment again by clicking here.

If this error continues to occur please contact us at support@labroots.com.


Researchers have known for a long time that we develop a preference for our dominant hand very early on; it had been thought to be related to genetic differences between brain hemispheres. Last year, scientists found evidence to indicate it was actually related to asymmetrical gene activity in the spinal cord during development in the womb. It would seem that a growing embryo picks a favorite hand before the brain starts to control the body.

Studies have suggested that as much as 92 percent of the global population is right-handed. There have been many theories, both scientific and social, that have attempted to answer the question of why that is, and many researchers have suggested that we evolved to favor our right hands. Studies have also found that people who are left-handed are not psychologically or socially different from right-handers in any way.
About the Author
  • Experienced research scientist and technical expert with authorships on 28 peer-reviewed publications, traveler to over 60 countries, published photographer and internationally-exhibited painter, volunteer trained in disaster-response, CPR and DV counseling.
You May Also Like
JUL 09, 2018
Videos
JUL 09, 2018
Does the Mediterranean Diet Keep Your Brain Healthy?
In southern European countries, the "Mediterranean Diet" is widespread and lauded as a healthy way to eat. It includes very little red meat, lots...
JUL 19, 2018
Videos
JUL 19, 2018
The Transition to Multicellular Life May Have Been Simple
It may have been relatively easy for complex organisms to form from one-celled microbes, researchers suggest....
JUL 23, 2018
Videos
JUL 23, 2018
Can Dark-Colored Eyes See Better?
  Other than health risks associated with certain eye colors, can some colors see better than others? For example, can brown eyes see better than ligh...
JUL 24, 2018
Chemistry & Physics
JUL 24, 2018
What is UV Photography?
Human eyes see visible light, whose wavelength ranges between 400 and 750 nanometers (nm). To visualize anything lower than 400 nm, one can resort...
AUG 15, 2018
Videos
AUG 15, 2018
What Your Doodles Say About You
During a boring meeting, a teleconference or a less-than-interesting class, many of us will doodle mindlessly on paper. It’s a way of passing the tim...
AUG 15, 2018
Videos
AUG 15, 2018
CBD Being Used in Stem Cell Research
CDKL5 (cyclin-dependent kinase-like 5) is a gene that is found on the X-chromosome, mutations to this gene lead to a rare genetic disorder. Scientists...
Loading Comments...