Post-traumatic stress disorder symptom severity attenuates bi-directional associations between negative affect and avoidant coping: A daily diary study.

•Daytime negative affect related to evening avoidant coping.•Evening avoidant coping related to next-day daytime negative affect.•Daily relation of negative affect to avoidant coping was stronger among individuals with less severe PTSD symptoms.•Daily relation of avoidant coping to negative affect was stronger among individuals with more severe PTSD symptoms.•Findings advance our understanding of the negative affect-avoidant coping association.