IPIP-NEO-120 Personality Inventory
120-item personality inventory - 5 domains, 30 facets, public domain, free to use
120 items, 30 personality facets, 5 core domains. Built from the public-domain IPIP pool; scores correlate well with the commercial NEO-PI-R. About 20 minutes.
The full picture of personality
The IPIP-NEO-120 is a comprehensive personality assessment based on the Five-Factor Model (Big Five). It measures the five major personality domains and 30 specific facets (6 per domain) for a detailed picture of your personality.
The five domains
- Openness — imagination, creativity, curiosity
- Conscientiousness — organization, dependability, discipline
- Extraversion — sociability, assertiveness, positive emotions
- Agreeableness — cooperation, trust, empathy
- Neuroticism — anxiety, moodiness, emotional instability
The 30 facets
Each domain breaks down into 6 specific facets. For example, Extraversion includes: Friendliness, Gregariousness, Assertiveness, Activity Level, Excitement-Seeking, and Cheerfulness.
About this assessment
The International Personality Item Pool (IPIP) is a public-domain alternative to commercial personality measures. The IPIP-NEO-120 is based on the NEO-PI-R, the commercial Big Five assessment it was built to mirror.
- Internal consistency: α = 0.70–0.90 (domain and facet scales)
- Test-retest reliability: r = 0.75–0.85
- Completion time: 15–25 minutes
Result Interpretation
After completing the 120 questions, you'll receive an immediate, detailed report with:
- Your score — calculated automatically based on your responses
- Score interpretation — what your score means in practical terms
- Dimension breakdown — separate scores for each sub-scale
- Context — how your results compare to general population norms where available
All results are displayed on screen. No account or login needed.