The efficiency of the work most people do is a combination of their ability to focus and think. Cognitive testing can help the user measure and optimize mental fatigue. Many surprising sources of significant impact on brain function can be revealed using cognitive testing. There is a philosophical argument to be made that those who think more are actually more alive. Unfortunately, constant testing can easily be the most time consuming part of a health tracking routine. Some of the tools listed bellow mitigate this problem.
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Formal Diagnostic Neuropsychological tests
Chess. lichess.org Most programs record moves even timestamps. Analysis programs though are based on computer analysis and will not give an analysis of performance like a human.
Video Games. Fighting games train and even analyze player's exact timings on button presses and reactions. Many other types are becoming E-Sports and should get or have in depth analysis of player performance. For Gerontology.
Test your cognitive abilities while training a skill. Since user is testing a skill they need, the issue of how strongly IQ correlates to job performance does not apply. Scott Young suggests breaking down your real work into small component skills and training those skill individualy to become better at the entire job.
Takes no extra time on the users part. Examples include how long it takes to open a smart phone or misspelling when typing emails. Whenever user fails to input data manually or skips a test could be because they were too tired or did not remember.
Similar to, and more fun then the validated test above but often useless. May need to compare other people's scores on exact same puzzle. School tests could possibly work the same way if the serial tests are given to enough people and a difficult of each question can be assessed.
Self-report cognitive functioning
Nootropics are supplements or drugs that that are claimed to improve cognitive function or to promote relaxation, improved mood, executive functions, attention, memory, creativity, or motivation in healthy individuals. The most commonly used nootropic in the world is caffeine.
- Brain health consequences of digital technology use