Commitment
2 Measure(s)
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Investment Model Scale
Rusbult, C. E., Martz, J. M., & Agnew, C. R. (1998). The investment model scale: Measuring commitment level, satisfaction level, quality of alternatives, and investment size. Personal relationships, 5(4), 357-387.
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Perceived Relationship Quality Components (PRQC) Scale
Fletcher, G. J. O., Simpson, J. A., & Thomas, G. (2000). The measurement of Perceived Relationship Quality Components: A confirmatory factor analytic approach. Personality and Social Psychology Bulletin, 26, 340355.