Dual n-back
Hold two streams in mind at once, a position and a sound, and keep updating them as new ones arrive. It is hard on purpose, and n rises to keep it that way.
An honest note first. Practice makes you better at this task, and at tasks much like it. A 2008 study reported gains in fluid intelligence, but later meta-analyses by Melby-Lervåg and Hulme (2013) and Melby-Lervåg, Redick and Hulme (2016) found no convincing transfer to intelligence or other far-off skills. Play it as a workout for attention, not as a way to raise your IQ.
A for position · L for letter · tap the buttons on a phone
Every 2.5 seconds a square lights up and a letter is spoken. Press A when the square is in the same place as n trials ago, and L when the letter is the same as n trials ago. Both can match at once. Score 80% and n goes up; drop under 50% and it comes down.
2-back
- Best cleared
- …
- Streak
- …
22 trials, about 55 seconds. Turn your sound on
Your level over time
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