Interindividual differences in cognitive flexibility: Influence of gray-matter volume, functional connectivity and trait impulsivity

Introduction: Cognitive flexibility, a core aspect of executive functioning, is required for the speeded shifting between different tasks and sets. Using an interindividual-differences approach, we examined whether cognitive flexibility is associated with gray matter volume (GMV) and functional connectivity (FC) of regions in a core executive-control network as well as with different facets of trait impulsivity. Methods: The core executive network was derived from three large-scale meta-analyses and only included regions that showed consistent associations with sustained attention, working memory as well as inhi…