Department of Psychology, University of Miami, 5665 Ponce de Leon Blvd, Coral Gables, FL, 33146, USA.
California Institute of Technology, 1200 E California Blvd, Pasadena, CA, 91125, USA.
Behav Res Ther. 2020 Jun;129:103609. doi: 10.1016/j.brat.2020.103609. Epub 2020 Mar 27.
Repetitive negative thinking (RNT) represents a transdiagnostic risk factor for affective disorders, and stress is theorized to exacerbate this vulnerability. One mechanism by which stress may influence individual differences in psychiatric symptoms is through altered decision-making, and loss aversion in particular. The present study uses multiple methods to investigate the relationships between RNT, stress, and decision-making. We measured RNT in young adults (N = 90) recently exposed to a natural stressor, Hurricane Irma, and tested the influence of RNT on changes in affect, cortisol, and decision-making during a laboratory stress induction two months later. Post-hurricane RNT predicted greater increases in loss averse decision-making (β = 0.30 [0.14, 0.47], p < .001; rp = 0.079) and negative affect (β = 0.59 [0.37, 0.81], p < .001; rp = 0.319) during the early-phase response to the laboratory stressor, as well as poorer cortisol recovery (β = 0.32, [0.10, 0.54], p = .005; rp = 0.095) in the late-phase stress response. Results highlight the role of loss aversion and stress in understanding RNT as an affective vulnerability factor.
重复性消极思维（RNT）代表了情感障碍的一种跨诊断风险因素，而压力被认为会加剧这种脆弱性。压力影响精神症状个体差异的一种机制是通过改变决策，特别是损失厌恶。本研究使用多种方法来研究 RNT、压力和决策之间的关系。我们在最近经历了自然灾害飓风伊尔玛的年轻人（N=90）中测量了 RNT，并在两个月后进行的实验室压力诱导中测试了 RNT 对情绪、皮质醇和决策变化的影响。飓风后 RNT 预测了在实验室应激源的早期反应中，损失厌恶决策（β=0.30 [0.14, 0.47]，p<0.001；rp=0.079）和消极情绪（β=0.59 [0.37, 0.81]，p<0.001；rp=0.319）的更大增加，以及在晚期应激反应中皮质醇恢复较差（β=0.32，[0.10, 0.54]，p=0.005；rp=0.095）。研究结果强调了损失厌恶和压力在理解 RNT 作为情感脆弱性因素中的作用。
