Changes

Everyone should track their cognitive ability as much as health-conscious people track their heartrate and exercise. IQ tests are supposed to have high 'reliability' and not change much between days for any individual. [[Quantified Mind|Formal cognitive testing]] takes too much time and effect on daily life of the specific thing the cognitive test tests is often questioned. Skill trainers and testers like typing tutors have none of the mentioned problems. However, even if a skill test is useful for optimizing the skill, things like dependence on psychological factors may not make it a good cognitive test. The skill test will have to correlate with validated cognitive tests or obviously important health things or at least transfer to other tests to become validated<ref>[[wikipedia:Validity_(statistics)|en.wikipedia.org/wiki/Validity_(statistics)]]</ref> as a cognitive or health test. The tests are unlikely to be pure in the sense of [[Quantified Mind]]' science page. This makes them better checks for general unhealth but harder to diagnose a specific problem with.       

Everyone should track their cognitive ability as much as health-conscious people track their heartrate and exercise. IQ tests are supposed to have high 'reliability' and not change much between days for any individual. [[Quantified Mind|Formal cognitive testing]] takes too much time and effect on daily life of the specific thing the cognitive test tests is often questioned. Skill trainers and testers like typing tutors have none of the mentioned problems. However, even if a skill test is useful for optimizing the skill, things like dependence on psychological factors may not make it a good cognitive test. The skill test will have to correlate with validated cognitive tests or obviously important health things or at least transfer to other tests to become validated<ref>[[wikipedia:Validity_(statistics)|en.wikipedia.org/wiki/Validity_(statistics)]]</ref> as a cognitive or health test. The tests are unlikely to be pure in the sense of [[Quantified Mind]]' science page. This makes them better checks for general unhealth but harder to diagnose a specific problem with.       

Wozniak of supermemo has found correlation between sleep and flash card skill.<ref>supermemo.guru/wiki/Sleep_and_learning#Studying_sleep_and_learning_with_SuperMemo</ref><ref>supermemo.guru/wiki/Biphasic_life#Biphasic_learning</ref>       

Wozniak of supermemo has found correlation between sleep and flash card skill.<ref>supermemo.guru/wiki/Sleep_and_learning#Studying_sleep_and_learning_with_SuperMemo</ref><ref>supermemo.guru/wiki/Biphasic_life#Biphasic_learning</ref><ref>supermemopedia.com/wiki/SleepChart</ref>       

=== Specific cognitive health tests ===

=== Specific cognitive health tests ===