Self-control and its relation to emotions and psychobiology: evidence from a Day Reconstruction Method study

Abstract

This study aimed to ascertain whether selfcontrol predicts heart rate, heart rate variability, and the cortisol slope, and to determine whether health behaviors and affect patterns mediate these relationships. A sample of 198 adults completed the Self-Control Scale (Tangney in J Pers 72:271-322, 2004), and reported their exercise levels, and cigarette and alcohol use. Participants provided a complete account of their emotional experiences over a full day, along with morning and evening salivary cortisol samples and a continuous measure of cardiovascular activity on the same day. High trait self-control predicted low resting heart rate, high heart rate variability, and a steep cortisol slope. Those with high self-control displayed stable emotional patterns which explained the link between self-control and the cortisol slope. The self-controlled smoked less and this explained their low heart rates. The capacity to sustain stable patterns of affect across diverse contexts may be an important pathway through which self-control relates to psychophysiological functioning and potentially health.