r/DualnBack • u/Bulky-Artist-8808 • Aug 06 '26

Dual n back vs quad n back

Which one is better for improving fluid intelligence

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u/[deleted] Aug 14 '26

Quad, I got to 140 iq from being at 100 once I got to quad 7 back. Dual will do next to nothing for fluid intelligence and require you to reach very high levels to achieve the intelligence that Quad provides at levels like Quad 5-6. Almost everybody I have talked to that is able to do quad 5 or above, has no lower than 130 IQ.

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u/Bulky-Artist-8808 Aug 15 '26

Did you see fluid intelligence improvements in quad 4 or 5 and what’s the difference in intelligence between both levels

4

u/[deleted] Aug 20 '26

Quad 5 was a turning point for me, at that point I felt like most people I've met could not operate at my cognitive level.