Interest in mindfulness and relationship satisfaction is increasingly
growing. However, although partners in a relationship have mutually interacted,
there are few studies exploring this from a dyadic perspective. Thus, this research
aims to investigate this dyadic association and furthermore the mediating role of
attachment-related process, attachment avoidance and anxiety via Actor-Partner
Interdependence Model. Participants of the study were 196 heterosexual college
student couples, 196 males’ average age 21.26 (SD = 2.17), 196 females’ average age
20.66 (SD = 1.88), relationship length ranging from 1 month to 95 months (M = 22.25
(24.67) for males, M = 20.98 (18.98) for females), approximately 36.73% of couples
in long-distance love. They were measured by the Five Facet Mindfulness
Questionnaire, a revised version of the Experience in Close Relationships
Questionnaire and the Intimate Relationship Quality Questionnaire. Results showed
that the actor effects of mindfulness on relationship satisfaction were significant
for both males and females, while the partner effect only displayed for males. It
revealed a mixed dyadic pattern for males and an actor-only pattern for females.
Additionally, actor-partner interdependence mediation analysis showed that actor
mindfulness was associated with higher relationship satisfaction directly and
indirectly. Indirectly, higher actor level of mindfulness was linked to greater
secure attachment, lower attachment avoidance, and attachment anxiety, and thus to
higher relationship satisfaction. Partner mindfulness was associated with higher
relationship satisfaction only indirectly in two ways. Higher partner levels of
mindfulness were associated with secure attachment, lower partner avoidance, and
self’s attachment anxiety, and thus to self’s higher relationship satisfaction. The
current study advances our understanding of attachment in the association between
mindfulness and relationship from a dyadic perspective. Limitations and future
research were discussed.