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  2. Mental abacus - Wikipedia

    en.wikipedia.org/wiki/Mental_abacus

    Mental calculation is said to improve mental capability, increases speed of response, memory power, and concentration power. Many veteran and prolific abacus users in China, Japan, South Korea, and others who use the abacus daily, naturally tend to not use the abacus any more, but perform calculations by visualizing the abacus.

  3. Alertness - Wikipedia

    en.wikipedia.org/wiki/Alertness

    The stimulant and adenosine receptor antagonist caffeine is widely used to increase alertness or wakefulness and improve mood or performance. People typically self-administer it in the form of drinks like green tea (where it is present alongside the l-theanine ), energy drinks (often containing sugar / sugar-substitutes ), or coffee (which ...

  4. Visual acuity - Wikipedia

    en.wikipedia.org/wiki/Visual_acuity

    For 6/6 = 1.0 acuity, the size of a letter on the Snellen chart or Landolt C chart is a visual angle of 5 arc minutes (1 arc min = 1/60 of a degree), which is a 43 point font at 20 feet. [10] By the design of a typical optotype (like a Snellen E or a Landolt C), the critical gap that needs to be resolved is 1/5 this value, i.e., 1 arc min.

  5. Acutance - Wikipedia

    en.wikipedia.org/wiki/Acutance

    Acutance in the left line was artificially increased by adding a one-pixel-wide darker border on the outside of the line and a one-pixel-wide brighter border on the inside of the line. The actual sharpness of the image is unchanged, but the apparent sharpness is increased because of the greater acutance. Artificially increased acutance has ...

  6. Mental chronometry - Wikipedia

    en.wikipedia.org/wiki/Mental_chronometry

    Reaction time (RT; also referred to as "response time") is measured by the elapsed time between stimulus onset and an individual's response on elementary cognitive tasks (ECTs), which are relatively simple perceptual-motor tasks typically administered in a laboratory setting. [1] Mental chronometry is one of the core methodological paradigms of ...

  7. Mental toughness - Wikipedia

    en.wikipedia.org/wiki/Mental_toughness

    Mental toughness is a measure of individual psychological resilience and confidence that may predict success in sport, education, and in the workplace. [1] The concept emerged in the context of sports training and sports psychology, as one of a set of attributes that allow a person to become a better athlete and able to cope with difficult training and difficult competitive situations and ...

  8. Analysis paralysis - Wikipedia

    en.wikipedia.org/wiki/Analysis_paralysis

    Analysis paralysis is a critical problem in athletics. It can be explained in simple terms as "failure to react in response to overthought". A victim of sporting analysis paralysis will frequently think in complicated terms of "what to do next" while contemplating the variety of possibilities, and in doing so exhausts the available time in which to act.

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