Cognitive performance
Attention, memory, and processing speed under a named task. Not IQ-as-destiny and not a CEO score.
This atlas uses cognitive performance for identified deficit-correction arrows (iron, sleep) and refuses to let it smuggle status or income. A lab task is not a promotion.
Also called attention, working memory.
Incident edges
MECHANISM
Meta-analysis · High confidence
Sleep duration and regularity→Cognitive performance
Cut sleep, cut attention. The meta is large; the leap to 'sleep your way to a title' is not in it.
MECHANISM
Randomized trial · Moderate
Ferritin→Cognitive performance
Fix a ferritin deficit and attention can move. Raise a normal ferritin and you have a supplement ad.