Sexual Desire Inventory (SDI)
Measure your sexual desire — dyadic (interpersonal) and solitary dimensions
How strong is your sexual desire? The SDI measures the cognitive component of desire across dyadic (interpersonal) and solitary dimensions. 14 items, about 3-5 minutes.
What Does the SDI Measure?
The SDI measures the cognitive component of sexual desire — not how often you have sex, but how often and how intensely you feel interested in it. Spector, Carey & Steinberg (1996) designed it around two relatively independent dimensions:
- Dyadic desire: wanting sexual activity with a partner
- Solitary desire: wanting sexual activity by yourself
Scale Structure
| Subscale | Items | Description |
|---|---|---|
| ---------- | :----: | ------------- |
| Dyadic | 8 (1-8) | Partner-related desire and sexual thoughts |
| Solitary | 3 (10-12) | Solo desire and self-stimulation |
| Auxiliary | 3 (9,13,14) | Peer comparison, tolerance, dream frequency (unscored) |
Scoring
Sum item values per subscale. Dyadic range: 0-62. Solitary range: 0-24. Higher scores = stronger desire.
Psychometrics
- Internal consistency: Dyadic α=.86, Solitary α=.96
- Test-retest (1 month): r=.76
- Two-factor structure confirmed, factors correlate at r=.35
Reference
Spector, I. P., Carey, M. P., & Steinberg, L. (1996). The sexual desire inventory: Development, factor structure, and evidence of reliability. *Journal of Sex & Marital Therapy*, 22(3), 175-190.
Scoring Guide
Two-subscale sum scoring. Dyadic = Q1-8 sum (0-62). Solitary = Q10-12 sum (0-24). Q9, Q13, Q14 unscored. No reverse items. Total = Dyadic + Solitary (0-86), informational only.Result Interpretation
Finish the 14 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. Where a test has sub-scales, each dimension gets its own score. Whenever possible, we also show how your results compare to population norms.
详细报告 📊
Get an in-depth analysis with dimension breakdowns, population comparisons, and actionable recommendations.