1. The interactive effect of change in perceived stress and trait anxiety on vagal recovery from cognitive challenge Crowley, Olga V.; McKinley, Paula S.; Burg, Matthew M.; Schwartz, Joseph E.; Ryff, Carol D.; Weinstein, Maxine; Seeman, Teresa E.; Sloan, Richard P. 2011 Articles Heart beat--Psychological aspectsStress (Psychology)--Health aspectsCardiovascular system--PsychophysiologyAnxiety--Physiological aspectsMedicinePsychology