Zhang, Na2018-08-142018-08-142018-05https://hdl.handle.net/11299/198989University of Minnesota Ph.D. dissertation. May 2018. Major: Family Social Science. Advisor: Abigail Gewirtz. 1 computer file (PDF); v, 83 pages.The lives of about two million American children have been affected by the military deployment of a parent. A parent's deployment influences children's adjustment through compromised parenting. While an emerging body of literature suggests that effective parenting requires parental emotion regulation, few studies have focused on fathers. In addition, limited knowledge exists about whether or how fathers' emotion regulation might affect their responsivity to a parent training program. With a focus on military fathers who had been deployed since 2001, the current research consisted of two studies that investigated vagal flexibility as an index of physiological emotion regulation and social engagement in relation to observed parenting behaviors. The first study, entitled "Military fathers' nurturing parenting: Psychological and physiological flexibility both matter", demonstrated that vagal flexibility buffers against the negative effects of psychological inflexibility (i.e. self-reported experiential avoidance) on observed emotion-related parenting. The second study, entitled "Adapting to 'ADAPT': Vagal flexibility predicts military fathers' changes in parenting following a parent training program", tested the effect of vagal flexibility in predicting the degree of changes in observed parenting skills at 1-year follow-up in a randomized controlled trial of the After Deployment Adaptive Parenting Tools/ADAPT program. These two studies provided evidence for the role of cardiac vagal tone as a correlate of emotion-related parenting and a tailoring variable to inform precision-based parenting programming for military fathers.enEmotion regulationFatherHeart rate variabilityInterventionParentingRespiratory sinus arrhythmiaThesis or Dissertation