Considering the ongoing debate in the self-control literature this study focus on what happens during the exertion of self-control. The aim of this study is to investigate whether and how presumably relevant subjective, behavioral, and physiological signs of self-control correspond.
Therefore we tracked the temporal progression of an expected decline in self-control as indicated by decreases in performance on an inhibition task and relate these performance decreases to a subjective self-control measure (subjective vitality). In addition, we explore whether changes in pupil diameter could reliably serve as a biometric measure of this decline.