A condition in which people with developmental delays (notably autism spectrum) or brain injury demonstrate some profound abilities far in excess of typical individuals.

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What's the percentage of people that are mental calculator prodigies?

I want to reply to this comment: What's the percentage of people that are mental calculator prodigies? How do they spread over the different parts of the world?
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How far can we train mental calculation?

Mental calculators are people with a prodigious ability in some area of mental calculation, such as multiplying large numbers or factoring large numbers. Unfortunately I forgot where I heard it, ...
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How are autistic savants able to perform certain mathematical computations so quickly?

How do autistic savants (or other people with these abilities) compute equations like $81^{100}$ in 2.5 minutes? Which algorithms do they use? Is it an efficient one, or do they just have a lot of ...
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How do the brains of savants such as Orlando Serrell and Temple Grandin compare to a standard brain?

There are the examples of Orlando Serrell and Temple Grandin, who remember quite a lot, due to autism. How do their brains compare to a standard brain? See also: Partitions and Volume:
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Savant syndrome and Cognitive bias

Take the case of an autistic savant with exceptional memory skills. Is this person less prone to cognitive biases involving memory skills such as availability heuristic bias than a normal person due ...
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What are the purported mechanisms of eidetic memory and why is it comorbid with autism?

Eidetic memory, often called "photographic" or "flashbulb" memory, is often associated with amazing feats of recall. Is the mechanism behind this phenomenon an aberration of the visualization of a ...