A freely available personality inventory measuring the five major dimensions of trait personality. Items use brief descriptors anchored to 'I see myself as someone who...'. Balances brevity with solid Big Five coverage.
Likert (1–5, disagree strongly to agree strongly)
Freely available for research. Five subscale scores are standard output. BFI-10 available for time-limited contexts (lower reliability). NEO-PI-R provides finer facet-level detail.
John, O.P., Donahue, E.M., & Kentle, R.L. (1991). The Big Five Inventory – versions 4a and 54. University of California, Institute of Personality and Social Research.
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