1. Necessary versus sufficient causes of impaired physiological functioning in generalized anxiety disorder. Open Access Author: Fisher, Aaron Jason Title: Necessary versus sufficient causes of impaired physiological functioning in generalized anxiety disorder. Graduate Program: Psychology Keywords: Generalized anxiety disorderautonomic nervous systemcardiachealthemotion File: Download Aaron_Fisher_Dissertation_Final.pdf Committee Members: Michelle Gayle Newman, Dissertation Advisor/Co-AdvisorMichelle Gayle Newman, Committee Chair/Co-ChairKristin Buss, Committee MemberWilliam Ray, Committee MemberDouglas Granger, Committee Member