In-Depth Big Five Personality Test
A 120-question Big Five test that scores the five main traits and the 30 narrower facets underneath them, for a much more detailed picture.
Before you start
Answer based on how you usually are, not how you would like to be. There are no right or wrong answers.
This questionnaire is for self-reflection. It is not a diagnosis.
What it measures
- Openness
- Conscientiousness
- Extraversion
- Agreeableness
- Neuroticism
About this test
Most Big Five tests give you five scores. This one splits each trait into six facets, so you can see which parts of a trait drive your result. Two people can both score high on extraversion, for example, while one is mostly friendly and the other mostly drawn to excitement. The 120 statements come from the IPIP-NEO-120, a public-domain inventory published by psychologist John A. Johnson in 2014. It takes about 15 minutes.
What the research says
This test uses the IPIP-NEO-120, developed by John A. Johnson at Pennsylvania State University and published in the Journal of Research in Personality in 2014. Its items come from the International Personality Item Pool, which is in the public domain. Johnson tested the inventory on 619,150 people. Reliability (Cronbach's alpha) ranged from .81 to .90 for the five traits and from .63 to .88 for the 30 facets, so trait scores are more dependable than single facet scores.
Research behind this test
Pennsylvania State University
Built a free 120-question inventory that measures 30 facets of the Big Five and tested it on more than 600,000 people. Our in-depth Big Five test uses its items.
These researchers and institutions are not affiliated with SelfAssessment.io and do not endorse it.
Questions about this test
How is this different from your 20-question Big Five test?
The short test gives you one score for each of the five traits. This one asks 120 questions and also scores 30 facets, six under each trait, so you can see what sits behind each trait score. The trait scores are also more reliable because each trait is measured with 24 questions instead of 4.
What are facets?
Facets are narrower traits inside each of the Big Five. Extraversion, for example, includes friendliness, gregariousness, assertiveness, activity level, excitement-seeking and cheerfulness. Two people with the same extraversion score can have quite different facet patterns.
How long does it take?
About 15 minutes. Answer with your first honest reaction, thinking about how you usually are rather than how you would like to be. Your progress is saved in your browser if you need a break.
How accurate is it?
The five trait scores are fairly reliable. Each facet is measured with only four questions, so facet scores are rougher. The test's author, John A. Johnson, notes that the facet scales work well for research but should not be used on their own to make important decisions about a person. Treat your facets as a starting point for reflection, not a verdict.