in which
partners (Level 1) are nested within couples (Level 2) and
the intercepts are declared random. The random-intercept
analysis retains information from each partner while controlling
for partners’ interdependence (e.g., Kurdek, 1997,
1998). The model comprised five Level 1 variables (individual
negative behaviors in the conflict task, individual
positive behaviors in the conflict task, individual negative
behaviors in the support task, individual positive behaviors
in the support task, and perceived help) and three Level 2
variables (dyadic negative behaviors in the conflict task,
dyadic positive behaviors in the support task, and dyadic
positive behaviors in the support task)