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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Brain Imaging Behav. 2012 Dec;6(4):517–527. doi: 10.1007/s11682-012-9176-1

Fig. 1.

Fig. 1

ADNI-EF bi-factor model of executive function. There are two secondary domains, one for the Category Fluency items and one for the Clock Drawing items