Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Models tested with confirmatory factor analysis. 1 = Visuospatial simple span forward, 2 = Visuospatial simple span backward, 3 = Visuospatial complex span task, 4 = Visuospatial running memory task, 5 = Visuospatial 2-back, 6 = Numerical-verbal 2-back, 7 = Numerical-verbal running memory task, 8 = Numerical-verbal complex span task, 9 = Numerical-verbal simple span backward, 10 = Numerical-verbal simple span forward.
