BFI
Big Five Inventory
A 44-item personality inventory measuring five broad dimensions (extraversion, agreeableness, conscientiousness, neuroticism, openness).
For each statement, select how well it describes you. This is a personality profile rather than a pass/fail screener.
About the Big Five Inventory
The Big Five model (also called OCEAN) is the most widely accepted framework in personality psychology. This 44-item version was developed by John, Donahue, and Kentle (1991). Unlike autism screening tools, the BFI does not produce a pass/fail result — it profiles your personality across five independent dimensions with autistic and neurotypical reference averages for context.
44 items on a 5-point scale. Suitable for ages 10+. Takes 5–10 minutes.
Autism & personality
Research consistently shows autistic individuals differ from neurotypical averages on certain traits:
- Extraversion tends to be lower, reflecting preference for less social stimulation
- Neuroticism tends to be higher, reflecting greater emotional sensitivity and anxiety
- Conscientiousness may be slightly lower, sometimes linked to executive function differences
- Agreeableness and Openness tend to be similar or slightly different between groups
Important: The BFI is a personality measure, not a diagnostic instrument for autism. Reference scores are drawn from research literature and are provided for context only. Individual personality profiles vary widely within both autistic and neurotypical groups.
John, O. P., Donahue, E. M., & Kentle, R. L. (1991). The Big Five Inventory — Versions 4a and 54. University of California, Berkeley, Institute of Personality and Social Research.