Emotional lability and affective synchrony in posttraumatic stress disorder pathology.

•Explored individual- and mixed-level emotion dynamics in a trauma-exposed sample.•Compared emotional responses to an individualized trauma cue versus a neutral cue.•Hierarchical linear models reveal greater reactivity and lability to trauma cue.•Greater synchrony among anxiety, anger, and self-conscious emotions to trauma cue.•Regressions stress importance of anxiety-anger synchrony in posttraumatic stress.