Couples Satisfaction Index (CSI-4)
IRT-Optimized Ultra-Short Form
IRT-optimized 4-item ultra-short Couples Satisfaction Index, developed by Funk & Rogge (2007). Selects the 4 most informative items from 32. Scores below 13.5 suggest relationship distress.
Scoring Guide
Score range 0-21. Below 13.5 suggests significant relationship distress. Cronbach's α = .94.