“…Importantly, in previous studies it has been demonstrated that depression symptoms, rumination, trait self-efficacy, self-esteem, and perceived stress may affect the HRV and cortisol response to stress (e.g., Chopra et al, 2009;Kemp et al, 2010;Key et al, 2008;O'Donnell et al, 2008;Pruessner et al, 2005;Puig-Perez et al, 2016;Salvador and Costa, 2009;Schönfeld et al, 2007;Schull et al, 2016;Vrshek-Schallhorn et al, 2018;Zoccola and Dickerson, 2012). Therefore, given that individual differences in these psychological factors may mask group differences in the HRV and cortisol response, we investigated whether anticipatory HRV response, HRV response to stress, AUCi and cortisol reactivity were significantly related to these baseline questionnaires.…”