Being left-handed

Brain organisation

No-one has come up with a definitive reason for WHY some people are left-handed, but about 13% of the population around the world are, and it is thought to be genetic – it definitely runs in families. Researchers have recently located a gene they believe “makes it possible to have a left-handed child ” so if you have that gene, one or more of your children may be left-handed, whereas without it, you will only have right-handers – sorry! The good news is, that if you are left-handed yourself, you have that gene and will pass it on through the generations!

The way the brain works is incredibly complex, but this simplified explanation will give you some understanding of where our left-hand dominance comes from. The brain is “cross-wired” so that the left hemisphere controls the right handed side of the body and vice-versa and hand dominance is connected with brain dominance on the opposite side – which is why we say that only left-handers are in their right minds!

Brain organisation left hemisphere and right hemisphere

The left hemisphere (RIGHT HAND CONTROL) controls Speech, Language, Writing, Logic, Mathematics, Science, this is the LINEAR THINKING MODE.

The right hemisphere (LEFT HAND CONTROL) controls Music, Art, Creativity, Perception, Emotions, Genius, this is the HOLISTIC THINKING MODE

Effects of right brain dominance

This brain dominance makes left-handers more likely than right handers to be creative and visual thinkers. This is supported by higher percentages of left-handers than normal in certain jobs and professions – music and the arts, media in general. (See the results of our Lifestyle Survey of Left-Handers for our detailed findings) Left-handers are also generally better at 3-dimensional perception and thinking, leading, for example, to more left-handed architects than normal. Left-handers are also usually pretty good at most ball sports and things involving hand-to-eye co-ordination.

Image descriptionThe view that left-handers are clumsy and awkward is not down to their natural abilities, but being forced to use right-handed tools and machinery which is completely back-to-front for them.

If you are interested in the latest research and findings on left-handedness, you can buy the excellent book Right-Hand, Left Hand by Chris McManus in the online shop.

Other pages in our Left Handed Facts Section:

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20 comments on “Being left-handed
  1. Leanna Nichols says:

    Q: Would that mean left-handed people would have a stroke on the right side of the brain and body?

  2. Beckey Schuck says:

    My husband was made to change from writing with his left hand to his right hand when he was little by his father. Does that screw up a person’s way of thinking?

  3. Taron says:

    I read that if you are left handed in second generation, the brain halves are actually the other way round. Or rather said, I learnt this in lessons, I ´m wondering.

  4. Ruth Chiles says:

    Being in the medical field pose a challenge for medical professionals, most instrument are made for the right handed, learning how to use these devices pose a daily challenge, but being determined as a left handed person I was not defeated, I am now retired and remember those days.

  5. enoch joel says:

    m completly left

  6. Jutamel Milan says:

    now this makes sense cuz i always do things to the left, thank you website!

  7. J.KAVIN BASTIN DEV says:

    EXCELLENT

  8. Proud lefty101 says:

    1in10 people are left handed that’s pretty rare.im glad I’m one of them

  9. Josephine Keers says:

    I did a quiz earlier that said my right side was 72% dominant and mainly used up on music. I always feel I should have been left handed but got takes out of it at primary school. Looks like that’s true.

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