Abstract
Infidelity is any behavior that breaks the implied agreement of exclusivity within a romantic relationship and is a leading cause of divorce. Previous literature has established a relationship between Adverse Childhood Experiences (ACEs) and infidelity perpetration. As experiencing childhood adversity does not guarantee an individual will engage in infidelity, mechanisms explaining this relationship should be explored. We investigated whether avoidant and anxious attachment styles mediate the relationship between ACEs and cheating frequency. A sample of 584 participants aged 18–82 years (M = 35.31, SD = 11.68, 67.0% female) was recruited and completed online versions of the Childhood Experiences Survey—17, the Relationship Structures Questionnaire, and frequency of cheating behavior in their current or most recent relationship. After dichotomizing gender and testing assumptions, data from 553 participants were available for analysis. A parallel mediation provided support for the first hypothesis, and partial support for the second. Specifically, ACEs were positively associated with anxious and avoidant attachment styles, but only avoidant attachment was significantly and positively associated with cheating frequency. As such, only avoidant attachment acted in a manner consistent with a mediator in the relationship between ACEs and infidelity. This result suggests a potential link between childhood adversity and the development of both avoidant and anxious attachment styles, but that individuals with an avoidant attachment style are more likely to engage in infidelity. These findings provide insight into the role attachment styles play in infidelity post-childhood adversity, and have the potential to guide therapeutic interventions for affected individuals.