P300 latency correlates with digit span.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001921:Brain / Q000502:physiology*; D002648:Child; D002675:Child, Preschool; D005071:Evoked Potentials; D006801:Humans; D008568:Memory / Q000502:physiology*; D008875:Middle Aged; D011581:Psychological Tests; D011930:Reaction Time