N-back memory
1-back vs 2-back
N-back tasks train active updating, not just simple recall.
Quick answer
The simple difference
In 1-back, you compare the current item to the previous one. In 2-back, you compare it to the item two steps earlier.
How to use it
1
Start with 1-back.
2
Track accuracy before speed.
3
Move to 2-back slowly.
4
Review where updating fails.
What this trains
Working memory
Updating
Attention
Error monitoring
IQFlow
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IQFlow turns short cognitive checks into a broader profile across reasoning, memory, focus, and speed.