7Pietrzak R H, Johnson D C, Goldstein M B, et al. Psycho- logical resilience and postdeployment social support protect a- gainst traumatic stress and depressive symptoms in soldiers re- turning from Operations Enduring Freedom and Iraqi Freedom [ J ]. Depress Anxiety, 2009, 26 (8) : 745 - 751.
8Fredriekson B L, Mancuso R A, Branigan C, et al. The un- doing effect of positive emotions [ J ]. Motiv Emot, 2000, 24 (4) : 237 -258.
9Moskowitz J T, Hult J R, Duncan L G, et al. A positive af- fect intervention for people experiencing health-related stress: development and non-randomized pilot test[ J]. J Health Psy- chol, 2011,17(5) : 676 -692.
10Telman M D, Holmes E A, Lau J Y. Modifying adolescent interpretation biases through cognitive training: effects on neg- ative affect and stress appraisals [ J ]. Child Psychiatry Hum Dev, 2013,44(5): 602-611.