Seng, Elizabeth K. , and Kenneth A. Holroyd (2010), "Dynamics of Changes in Self-Efficacy and Locus of Control Expectancies in the Behavioral and Drug Treatment of Severe Migraine", Annals of Behavioral Medicine, 40, 235-247.
- The extent to which individuals with recurrent headache expect the occurrence, worsening and improvement of their headaches are influenced primarily by the actions of medical professionals.
Following the doctor’s medication regimen is the best way for me not to be laid-up with a headache.
- Martin, N. J., K. A. Holroyd, and D. B. Penzien (1990), "The headache-specific locus of control scale: Adaptation to recurrent headaches.", Headache, 30, 729-734. [Endnote]