Couples Satisfaction Index (CSI-16)
IRT-Optimized Standard Form
A deeper look at your relationship satisfaction. 16-item Couples Satisfaction Index (CSI) by Funk & Rogge (2007), with scores 0-81. Below 51.5 suggests significant distress.
What the CSI Measures
The Couples Satisfaction Index (CSI) was built by Funk and Rogge (2007) to fix a problem with older relationship scales — they were noisy. Using item response theory (a statistical approach that pinpoints which questions carry the most information), they sifted through 180 candidate items to find the ones that actually separate satisfied from dissatisfied couples cleanly.
The CSI-16 takes about 3 minutes. Sixteen questions cover how you feel about the relationship, how well you agree on big things, and how the relationship feels day to day. Questions mix formats — some ask how often certain things happen, others use word pairs (good/bad, full/empty, hopeful/discouraging). Scores run 0-81. Below 51.5 suggests real distress.
Why it differs. Most older scales (like the DAS or MAT) were developed before IRT was practical. The CSI items were picked by how much information they carry — it is more precise in the middle range where most people fall. The alpha is 0.98 for the full 32-item version and still 0.94 for the 4-item screener.
Scoring Guide
Score range 0-81. Below 51.5 suggests significant relationship distress. Cronbach's α = .98.Result Interpretation
Finish the 16 questions and you get your results straight away — no account, no sign-up, no waiting.
We calculate your total from your answers, then give you a plain-language explanation of what the numbers mean. Whenever possible, we also show how your results compare to population norms.
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