Couples Satisfaction Index (CSI-16)
Psychology: Social & RelationshipsReliability: alpha 0.983 sample items
About this scale
A 16-item measure of relationship satisfaction with high precision and minimal floor/ceiling effects. Outperforms older scales on item discrimination.
Sample item(s)
“Please indicate the degree of happiness, all things considered, of your relationship”
“I have a warm and comfortable relationship with my partner”
“I really feel like part of a team with my partner”
Reliability
Reported internal consistency: alpha 0.98. As a rule of thumb, Cronbach’s α ≥ .70 is considered acceptable, ≥ .80 good, and ≥ .90 excellent for established measures.
Notes
Free for academic use; superior IRT properties.
Source & citation
Funk, J. L., & Rogge, R. D. (2007): Testing the ruler with item response theory: Increasing precision of measurement for relationship satisfaction with the Couples Satisfaction Index. Journal of Family Psychology, Vol. 21, No. 4, pp. 572–583.
Source. Scale details are summarised from the publication cited above. Always consult the original source for the full item set, scoring, and permission to use.
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