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What causes some people to be left-handed, and why are fewer people left-handed than right-handed?
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Right-Handed Vs Left Handed
Human hand preference is predictably a biological and genetic (hereditary) phenomenon, but we see that 85 percent of people are right-handed.
Researchers have identified the specific gene (D Gene) that occurs more commonly among the population which responsible for promoting right-hand preference. The C gene, which is less likely to occur within our gene pool, creates a coin-toss chance of an individual being left or right-handed.
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Unpredictable By Nature
Just like the weather, nature made sure that there are enough influencing factors that cause changes in hand-preference, like external, societal and cultural pressures, to result in various possible genetic combinations and chance influences.
This makes the entire process of hand preference unpredictable by design.
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SIMILAR ARTICLES & IDEAS:
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Avoiding Facts
Many people avoid facts even if it is beneficial for them to know. This strange quirk that defies logic is due to many psychological factors.
Human beings often avoid learning new i...
Aversion From Bad News
Human beings feel their hopes are shattered when they learn about the outcome of a certain illness or maybe the date of their death, or divorce, preferring to remain aloof and hopeful.
While mostly this applies only to bad news, there are certain cases when individuals prefer not to know about something which may be positive as well.
The Reason For Avoiding Facts
Information avoidance, even if knowing can help us make smarter choices, is a way for us to forego some of the sufferings that may be caused by us knowing about what the future brings, and allows us to remain in a state of suspense and wonder.
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Moving Together In Sync
- The synchronicity that is created while moving together in a simultaneous and coordinated manner results in strong social bonding, and well-being, according to new research.
- Activi...
Spontaneous Synchronicity
We tend to sync ourselves with others without even realizing it. People wave or clap at the same time in concerts, rocking in sync. A study showed that if two people are in a rocking chair, they will automatically start rocking it in sync with each other.
This silent conversation of movement results in a special bonding and closeness towards each other. This results in people liking each other, being generous and cooperative towards each other, reducing racial or economical bias. This behaviour is even seen in small children.
Dancing Together Since Ancient Times
Early humans devised ways to be and stay together using the same techniques, albeit unconsciously.
Voices and body movements synced together during traditional folk dances in various cultures helped people bond together.
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About Consciousness
Consciousness is everything you experience - taste, pain, love, feeling. Where these experiences come from is a mystery.
Many modern analytic philosophers of mind either d...
Searching For Physical Footprints
What is it about brain matter that gives rise to consciousness? In particular, the neuronal correlates of consciousness (NCC) - the minimal neuronal mechanisms jointly sufficient for any conscious experience.
Consider this question: What must happen in your brain for you to experience a toothache?
Neuronal Correlates of Consciousness (NCC)
The whole brain can be considered an NCC because it generates experience continually.
- When parts of the cerebellum, the "little brain" underneath the back of the brain, are lost to a stroke or otherwise, patients may lose the ability to play the piano, for example. But they never lose any aspect of their consciousness. This is because the cerebellum is almost wholly a feed-forward circuit. There are no complex feedback loops.
- The spinal cord and the cerebellum are not enough to create consciousness. Available evidence suggests neocortical tissue in generating feelings.
- The next stages of processing are the broad set of cortical regions, collectively known as the posterior hot zone, that gives rise to conscious perception. In clinical sources of causal evidence, stimulating the posterior hot zone can trigger a diversity of distinct sensations and feelings.
- It appears that almost all conscious experiences have their origin in the posterior cortex. But it does not explain the crucial difference between the posterior regions and much of the prefrontal cortex, which does not directly contribute to subjective content.