The authors investigated whether locus of control operates as a state variable, whether variation in daily locus of control is associated with anxiety and stressful events, and whether it predicts daily health behaviors and symptoms. Results revealed daily variation in locus of control was predicted by daily hassles and anxiety such that high same-day and previous-day anxiety and hassles were associated with reports of lower levels of control. Furthermore, daily locus of control was positively associated with positive health behaviors and predicted negative health symptoms.
Ryon, Holly S. & Gleason Marci E.J. (2014). The Role of Locus of Control in Daily Life. Personality and Social Psychology Bulletin, 40, 121-131.