Skip to main content
. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: Neuroimage. 2014 Sep 20;103:139–151. doi: 10.1016/j.neuroimage.2014.09.029

Figure 1.

Figure 1

Schematic sketch of brain-behavioral framework for the Reference Ability Neural Networks study: quantities given in rectangular or trapezoidal shapes are recorded in the study, while round shapes indicate both reference abilities and reference ability neural networks. The figure illustrates that not only are meaningful latent constructs expected on the basis of common patterns of fMRI activation across tasks representing the cognitive ability, but that those constructs are hypothesized to be related to the corresponding constructs defined on the basis of the correlations among behavioral performance in those same tasks. The upper boxes indicate that we expect that the effect of age on cognitive performance might be mediated by specific measures of brain aging. Further, brain changes may influence expression of the reference ability neural networks, yielding observed age-related cognitive changes.