Why Some People Can't Tell Right from Left

Some people have trouble making left-right distinctions. It's not a big deal, so long as you don't work in a medical profession.

Some people confuse easily when asked to distinguish left from right and vice versa, and it's not a terribly uncommon occurrence.

Gerard Gormley, a senior academic general practitioner at Queen's University Belfast, writes in The Conversation about this problem that he says affects “a significant portion of our population.” It may not seem like rocket science to some of us, but Gormley says that left-right confusion is a “complex neuro-psychological process involving several higher neurological functions such as the ability to integrate sensory and visual information, language function, and memory.”

When someone (most likely your GPS) is giving you directions, do you pause when they say, “Turn right here”? Taking a wrong turn is hardly life-threatening; for most people the issue causes no more than some embarrassment or inconvenience. But what if you were in a profession where it was your livelihood to know the difference?

Gormley writes:

“Some of the most tragic errors in medicine have been when surgery was performed on the wrong side of a patient: removing the wrong kidney or amputating the wrong leg.”

Consider the hospital environment for a moment — it's a distracting place to work, making the moment of distinguishing right from left all the more difficult for those who struggle.

Gormley has published research exploring “the impact of such interruptions on medical students’ ability to correctly discriminate right from left. While objectively measuring 234 medical students' ability to distinguish right from left, we subjected them to the typical ambient noise of a ward environment and interrupted them with clinical questions.”

He writes that even the mere background noise of a hospital ward was enough to throw off the medical student's ability to make a distinction between right and left. Asking them questions while trying to determine right from left “had an even greater impact.” Gormley notes that these distractions had the greatest effects on students who were older and female.

What's more, some people may not realize they have a problem making left-right judgments. Try out this handy test to see if you might be deluding yourself.

Also, don't try suggesting the "make an 'L' with your hand" trick. Gormley writes that research shows this technique has failed to assist people who struggle with this issue.

Read more at The Conversation.

Photo Credit: Shutterstock

LinkedIn meets Tinder in this mindful networking app

Swipe right to make the connections that could change your career.

Getty Images
Swipe right. Match. Meet over coffee or set up a call.

No, we aren't talking about Tinder. Introducing Shapr, a free app that helps people with synergistic professional goals and skill sets easily meet and collaborate.

Keep reading Show less

Radical theory says our universe sits on an inflating bubble in an extra dimension

Cosmologists propose a groundbreaking model of the universe using string theory.

Getty Images/Suvendu Giri
Surprising Science
  • A new paper uses string theory to propose a new model of the universe.
  • The researchers think our universe may be riding a bubble expanded by dark energy.
  • All matter in the universe may exist in strings that reach into another dimension.
Keep reading Show less

Your body’s full of stuff you no longer need. Here's a list.

Evolution doesn't clean up after itself very well.

Image source: Ernst Haeckel
Surprising Science
  • An evolutionary biologist got people swapping ideas about our lingering vestigia.
  • Basically, this is the stuff that served some evolutionary purpose at some point, but now is kind of, well, extra.
  • Here are the six traits that inaugurated the fun.
Keep reading Show less

Why I wear my life on my skin

For Damien Echols, tattoos are part of his existential armor.

Top Video Splash
  • In prison Damien Echols was known by his number SK931, not his name, and had his hair sheared off. Stripped of his identity, the only thing he had left was his skin.
  • This is why he began tattooing things that are meaningful to him — to carry a "suit of armor" made up the images of the people and things that have significance to him, from his friends to talismans.
  • Echols believes that all places are imbued with divinity: "If you interact with New York City as if there's an intelligence behind... then it will behave towards you the same way.".