The Roles of Affective Lability, Boredom, and Mindfulness in Predicting Number of Sex Partners within Women

Abstract

Affective lability, a trait related to borderline personality disorder, bipolar disorder, eating disorders, and post-traumatic stress disorder, is associated with a higher number of lifetime sex partners. Among individuals who are affectively labile, boredom proneness, which has been linked to impulsive and risky sexual behaviors, might increase the likelihood of having more sex partners. Conversely, mindfulness has been found to be associated with healthy emotion regulation and lower impulsivity, and may enable a greater tolerance of affective lability and boredom, and, in turn, lower the sense of urgency to engage in sex to cope. Thus, the present study investigated the links between affective lability, boredom proneness, mindfulness, and number of sex partners in the last year. We predicted that affective lability would be positively associated with number of sex partners, and that this association would be moderated by boredom proneness and mindfulness in a three-way interaction. Adult women (N = 469, Mage = 25.15 years) were recruited from online communities and completed measures of affective lability, boredom proneness, trait mindfulness, and number of sex partners in the last year. None of the preregistered three-way interactions were supported; however, exploratory analyses revealed that, among women who reported rapid changes between depression and elation, those who were less likely to observe thoughts and sensations had more sex partners in the last year. Clinicians and researchers should further investigate which facets of mindfulness may protect against a higher number of sex partners in affectively labile individuals.