Task Illustrations Diagram of cognitive control tasks used in the DMCC battery, highlighting key trial contrasts used to define cognitive control index. (A) Stroop task, illustrating contrast between incongruent and congruent trials. (B) AX-CPT, illustrating target (AX) trials as well as key contrast between BX and BY trials. (C) Cued-TS, illustrating contrast between incongruent and congruent trials. (D) Sternberg WM, illustrating target (NP) trials as well as key contrast between RN and NN trials. Diagram illustrates baseline condition, with stimulus timing information listed for each task, as well as the appropriate response button for each trial type. AX-CPT Baseline AX-CPT Proactive AX-CPT Reactive Cued Task-Switching Baseline Cued Task-Switching Proactive Cued Task-Switching Reactive Stroop Baseline Stroop Proactive Stroop Reactive Sternberg Baseline Sternberg Proactive Sternberg Reactive