periods of increased response time variability have been associated with greater propensity for task-unrelated thoughts
(e.g., Cheyne et al., 2009;
Stawarczyk et al., 2011a;
Bastian and Sackur, 2013; - RTVC assoc with self report ratings
Seli et al., 2015a).
BUT RT variability could relate to: decreased drift rate, larger trial-to-trial variability in drift, or larger boundary separation.