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| Mental Calculators |
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| Some people have a capability of calculating mentally at a very fast rate. The majority of these people inherit this trait. Presently, about 100 persons are known worldwide to be capable of such calculations by inheritance. Some of them are Salo Finkelstein and Daniel Tammet. |
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| 2 |
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| Synesthesia |
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| Some people always group letters or numbers of some colours, while some have a feeling of some particular taste on hearing a particular word. This is caused when stimulation of some sensory paths results in an uncontrolled response in other sensory paths. This condition is also inherited and should not be classified as a neurological disorder. |
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| 3 |
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| Tetrachromacy |
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| Tetrachromats are persons who can see four sources of light – red, green, blue and ultraviolet – from the light spectrum. This phenomenon is more common in women. It is a fact that men who are colour blinds may have a tetrachromat mother. |
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| 4 |
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| Absolute Pitch |
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| This is capability to recognize and replicate a sound at the exact pitch without hearing it. People having this ability can classify sounds into categories and remember the pitch. It is not sure whether this capability is genetic, as a child learning music from an early age is likely to pick up this ability. |
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| 5 |
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| Supertasters |
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| Supertasters are people who have superior sense of taste. A supertaster can perceive bitterness very accurately out of the 5 tastes - sweet, salty, bitter, sour and umami. They often detest bitter foods. Majority of supertasters are women and Africans and Asians are also good in taste. |
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