Although researchers working within the interdependence theory tradition
have argued that relationship commitment is multiply determined (Levinger,
1979; Rusbult, 1983; Sabatelli & Cecil- Pigo, 1985; Thibaut & Kelley, 1959), no
measure has been developed to assess these determinants. The present study
provides preliminary psychometric information regarding such a measure-the
Multiple Determinants of Relationship Commitment Inventory (MDRCI). Three
sets of findings from this study support the position that relationship commitment
is multiply determined. First, this study provided evidence from confirmatory
factor analysis that each of the six purported determinants of relationship
commitment derived from interdependence theory-rewards, costs, match to
comparison level, alternatives, investments, and barriers-were distinct constructs.
Because this pattern was crossvalidated across partners, the reported
factor structure can be assumed to be
