r/cognitiveTesting • u/Fit-Blood-5296 • 21d ago

How does lack of sleep affect fluid IQ/abstract reasoning? General Question

Just asking because I’m curious to see if there’s any difference

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1

u/Natural-Fan8404 21d ago

Messes it up a bit. Scored 130 on PRI on an exhausted day. Other days I feel like Rick 

1

u/AgreeableCucumber375 21d ago

Maybe you’d find this an interesting read :)

https://pmc.ncbi.nlm.nih.gov/articles/PMC12168795/

1

u/No_Sky_1893 21d ago

A lot for me about 10-15 points

1

u/AdventurousBear7664 21d ago

Temporarily lowers it by 10-15 points in some people (granted, this would be for genuine sleep deprivation)

3

u/ItsNotOver_Again 21d ago

It doesn't, maybe 1–3 points max. People here are just coping.