Start the test
Menu
Take the free test
Language

What are the Big Five personality traits? A sourced guide to OCEAN

By the 64 Types team · Updated October 20, 2026 · 7 min read · 36 peer-reviewed sources

The Big Five (also called the Five-Factor Model, or OCEAN) describes personality with five broad, continuous traits: Openness to experience, Conscientiousness, Extraversion, Agreeableness and Neuroticism (whose opposite pole is emotional stability). The five factors emerged when researchers analysed how the words people use to describe each other cluster together,[1] and scores on them predict outcomes such as job performance, health, relationship satisfaction and longevity, usually with small to moderate effects.[2][3][4]

Everyone has a position on all five traits. A score means something only relative to other people, so results are best read as percentiles rather than as types. Below: what each trait is, what the research links it to, how much it changes over life, and how to measure it for free.

Where the Big Five comes from

The model grew out of the lexical approach: the idea that the personality differences that matter most in daily life end up encoded as words in ordinary language. When researchers collected the adjectives people use to describe one another and analysed how self- and peer-ratings on them correlate, five broad factors kept appearing. Lewis Goldberg’s work on this structure produced a widely used set of public-domain marker items for the five factors.[1]

Each broad trait contains narrower facets. The public-domain IPIP-NEO-120, for example, measures six facets per trait (30 in total), such as Anxiety and Vulnerability within Neuroticism, or Orderliness and Self-Discipline within Conscientiousness.[5]

Studies of personality vocabulary in several other languages later found a sixth broad factor, Honesty-Humility, which led to the six-factor HEXACO model.[6][7] It is covered at the end of this guide.

The five traits and what they predict

The descriptions below summarise what high and low scorers tend to be like and the main findings from meta-analyses (studies that pool many earlier studies). Typical correlations between a single trait and a life outcome are in the range of about r = .10 to .30: real and consistent, but far from destiny.[3][2]

Openness to Experience (O)

High scorers are curious, imaginative and drawn to ideas, art and new experiences; low scorers are more practical, conventional and focused on the concrete. Openness is linked to creativity in both artistic and scientific work,[8] and it is the Big Five trait most related to Artistic and Investigative vocational interests.[9]

Conscientiousness (C)

High scorers are organised, disciplined, careful and reliable; low scorers are more spontaneous, flexible and less bound by plans. Conscientiousness is the Big Five trait that predicts job performance most consistently across occupations,[10][11] it is the trait most strongly related to academic performance,[12] and more conscientious people tend to live longer,[13] partly through healthier habits such as less smoking, drinking and risky driving.[14] Our conscientiousness guide goes deeper.

Extraversion (E)

High scorers are sociable, talkative, assertive and energetic; low scorers (introverts) are more reserved and comfortable alone. Extraversion is the trait most consistently linked to emerging as a leader in groups,[15] it predicts performance in management and sales jobs specifically,[10] and extraverts report more frequent pleasant emotions on average.[16] See introvert vs extrovert for what the research says about ambiverts.

Agreeableness (A)

High scorers are warm, trusting, cooperative and compassionate; low scorers are more direct, sceptical and competitive. Agreeable people tend to handle interpersonal conflict more constructively,[17] and having an agreeable partner is linked to higher relationship satisfaction.[18] The trait has costs too: in one large set of studies, more agreeable people earned less, and the gap was larger for men.[19]

Neuroticism (N), or its opposite, Emotional Stability

High scorers experience negative emotions such as worry, irritability and low mood more often and more intensely; low scorers are calm, even-tempered and resilient. Neuroticism is strongly linked to anxiety and depressive disorders,[20] it has substantial public-health significance,[21] it is the Big Five trait most strongly (negatively) related to job satisfaction,[22] and it is among the strongest trait predictors of lower subjective well-being.[23] A high score is not a diagnosis. More in our neuroticism guide.

The Big Five at a glance
TraitHigh scorers tend to beLow scorers tend to beMain research links
OpennessCurious, imaginative, drawn to ideasPractical, conventional, concreteCreativity; artistic and investigative interests
ConscientiousnessOrganised, disciplined, reliableSpontaneous, flexible, less structuredJob and academic performance; health; longevity
ExtraversionSociable, assertive, energeticReserved, quiet, comfortable aloneLeadership emergence; sales and management; positive mood
AgreeablenessWarm, trusting, cooperativeDirect, sceptical, competitiveConstructive conflict; partner satisfaction; lower pay
NeuroticismProne to worry, stress, low moodCalm, even-tempered, resilientAnxiety and depression risk; lower job and life satisfaction

Are the Big Five traits stable or can they change?

Both. People keep their position relative to others fairly well over time, and this rank-order consistency increases with age, rising from childhood and peaking around midlife and later.[24] At the same time, average levels shift: between adolescence and middle age, most people become more conscientious, more emotionally stable and more socially dominant, and agreeableness rises later in life.[25]

Deliberate change is possible too. A review of over 200 intervention studies found that personality traits, especially emotional stability, changed measurably during therapy and other interventions.[26] In a randomised trial, a smartphone-based coaching programme helped people shift the traits they wanted to change.[27] See Can your personality type change? for details.

How much do the Big Five actually predict?

Single correlations look small, but they add up. In a review of prospective studies, the predictive power of personality traits for mortality, divorce and occupational attainment was comparable to that of socioeconomic status and cognitive ability.[2] Ozer and Benet-Martínez organised hundreds of findings showing that the five traits relate to individual outcomes (such as health and well-being), interpersonal outcomes (such as relationship quality) and social outcomes (such as occupational choice and community involvement).[3]

Those findings also hold up comparatively well. When Christopher Soto re-tested 78 published trait–outcome associations in new, large samples, most replicated, although the effects were usually somewhat smaller than in the original studies.[4]

How to read effect sizes

Treat a trait score as a tendency that shifts the odds, not a forecast. Two people with the same percentile can lead very different lives, because situations, skills, choices and luck matter a great deal.

The Big Five vs the 16 personality types

The four scales of the Myers-Briggs Type Indicator overlap with four of the Big Five traits: E/I with Extraversion and S/N with Openness (strongly), T/F with Agreeableness and J/P with Conscientiousness (moderately). No MBTI scale captures Neuroticism.[28][29] The other key difference is format: the Big Five reports continuous scores, while type tests split each scale at a cut-off, which puts people near the middle at risk of a different type on retest.[30][31]

Our guide to MBTI vs the Big Five shows how to translate a four-letter type into Big Five terms, and Is the MBTI scientifically valid? covers the evidence on types.

Beyond five: Honesty-Humility

Lexical studies in several languages found six rather than five broad factors. The sixth, Honesty-Humility, covers sincerity, fairness, greed avoidance and modesty.[6][7] It predicts lower workplace deviance and more prosocial behaviour beyond what the Big Five explain.[32][33] Read more in What is the HEXACO model?

How to measure your Big Five traits for free

Several research-grade Big Five measures are in the public domain, so anyone may use them free of charge. They come from the International Personality Item Pool (IPIP):

  • IPIP Big-Five factor markers: 50 items, 10 per trait, developed by Goldberg.[1]
  • IPIP-NEO-120: 120 items measuring the five traits and their 30 facets.[5]
  • IPIP-HEXACO scales: public-domain items for the six HEXACO factors, including Honesty-Humility.[34]

Look for a test that reports percentiles against a stated norm sample, shows its reliability, and does not hide uncertainty near the middle of a scale. Self-reports also have blind spots: people who know you well can rate some traits, and predict some outcomes, as well as or better than you do.[35][36] Our guide Are personality tests accurate? has a full checklist.

The free 64 Types test uses the 50 IPIP Big-Five markers plus 12 IPIP-HEXACO Honesty-Humility items, reports a percentile for each of the six traits against open norm data, and flags borderline scores. The methods, norms and reliabilities are on the science page.

Frequently asked questions

What does OCEAN stand for?

Openness to experience, Conscientiousness, Extraversion, Agreeableness and Neuroticism, the five broad traits of the Five-Factor Model.[1]

Is the Big Five scientifically valid?

It is the most extensively researched trait model. Its scores predict outcomes such as job performance, health and relationship satisfaction,[2][3] and most of these associations replicated in large new samples, though usually with smaller effects.[4]

Which Big Five trait predicts success the most?

For job performance across occupations, Conscientiousness is the most consistent predictor;[10][11] it is also the trait most related to academic performance.[12] Effects are moderate, not decisive.

Do the Big Five traits change with age?

On average, people become more conscientious, emotionally stable and socially dominant from adolescence to middle age, and more agreeable later in life,[25] while their position relative to others becomes more stable with age.[24]

Is there a free Big Five test?

Yes. IPIP measures such as the 50-item Big-Five markers and the IPIP-NEO-120 are public domain and free to use.[1][5] The 64 Types test is built on them.

References

  1. Goldberg, L. R. (1992). The development of markers for the Big-Five factor structure. Psychological Assessment, 4(1), 26–42.
  2. Roberts, B. W., Kuncel, N. R., Shiner, R., Caspi, A., & Goldberg, L. R. (2007). The power of personality: The comparative validity of personality traits, socioeconomic status, and cognitive ability for predicting important life outcomes. Perspectives on Psychological Science, 2(4), 313–345.
  3. Ozer, D. J., & Benet-Martínez, V. (2006). Personality and the prediction of consequential outcomes. Annual Review of Psychology, 57, 401–421.
  4. Soto, C. J. (2019). How replicable are links between personality traits and consequential life outcomes? The Life Outcomes of Personality Replication Project. Psychological Science, 30(5), 711–727.
  5. Johnson, J. A. (2014). Measuring thirty facets of the Five Factor Model with a 120-item public domain inventory: Development of the IPIP-NEO-120. Journal of Research in Personality, 51, 78–89.
  6. Ashton, M. C., Lee, K., Perugini, M., Szarota, P., de Vries, R. E., Di Blas, L., Boies, K., & De Raad, B. (2004). A six-factor structure of personality-descriptive adjectives: Solutions from psycholexical studies in seven languages. Journal of Personality and Social Psychology, 86(2), 356–366.
  7. Ashton, M. C., & Lee, K. (2007). Empirical, theoretical, and practical advantages of the HEXACO model of personality structure. Personality and Social Psychology Review, 11(2), 150–166.
  8. Feist, G. J. (1998). A meta-analysis of personality in scientific and artistic creativity. Personality and Social Psychology Review, 2(4), 290–309.
  9. Larson, L. M., Rottinghaus, P. J., & Borgen, F. H. (2002). Meta-analyses of Big Six interests and Big Five personality factors. Journal of Vocational Behavior, 61(2), 217–239.
  10. Barrick, M. R., & Mount, M. K. (1991). The Big Five personality dimensions and job performance: A meta-analysis. Personnel Psychology, 44(1), 1–26.
  11. Wilmot, M. P., & Ones, D. S. (2019). A century of research on conscientiousness at work. Proceedings of the National Academy of Sciences, 116(46), 23004–23010.
  12. Poropat, A. E. (2009). A meta-analysis of the five-factor model of personality and academic performance. Psychological Bulletin, 135(2), 322–338.
  13. Kern, M. L., & Friedman, H. S. (2008). Do conscientious individuals live longer? A quantitative review. Health Psychology, 27(5), 505–512.
  14. Bogg, T., & Roberts, B. W. (2004). Conscientiousness and health-related behaviors: A meta-analysis of the leading behavioral contributors to mortality. Psychological Bulletin, 130(6), 887–919.
  15. Judge, T. A., Bono, J. E., Ilies, R., & Gerhardt, M. W. (2002). Personality and leadership: A qualitative and quantitative review. Journal of Applied Psychology, 87(4), 765–780.
  16. Lucas, R. E., & Fujita, F. (2000). Factors influencing the relation between extraversion and pleasant affect. Journal of Personality and Social Psychology, 79(6), 1039–1056.
  17. Jensen-Campbell, L. A., & Graziano, W. G. (2001). Agreeableness as a moderator of interpersonal conflict. Journal of Personality, 69(2), 323–362.
  18. Malouff, J. M., Thorsteinsson, E. B., Schutte, N. S., Bhullar, N., & Rooke, S. E. (2010). The five-factor model of personality and relationship satisfaction of intimate partners: A meta-analysis. Journal of Research in Personality, 44(1), 124–127.
  19. Judge, T. A., Livingston, B. A., & Hurst, C. (2012). Do nice guys—and gals—really finish last? The joint effects of sex and agreeableness on income. Journal of Personality and Social Psychology, 102(2), 390–407.
  20. Kotov, R., Gamez, W., Schmidt, F., & Watson, D. (2010). Linking "big" personality traits to anxiety, depressive, and substance use disorders: A meta-analysis. Psychological Bulletin, 136(5), 768–821.
  21. Lahey, B. B. (2009). Public health significance of neuroticism. American Psychologist, 64(4), 241–256.
  22. Judge, T. A., Heller, D., & Mount, M. K. (2002). Five-factor model of personality and job satisfaction: A meta-analysis. Journal of Applied Psychology, 87(3), 530–541.
  23. Steel, P., Schmidt, J., & Shultz, J. (2008). Refining the relationship between personality and subjective well-being. Psychological Bulletin, 134(1), 138–161.
  24. Roberts, B. W., & DelVecchio, W. F. (2000). The rank-order consistency of personality traits from childhood to old age: A quantitative review of longitudinal studies. Psychological Bulletin, 126(1), 3–25.
  25. Roberts, B. W., Walton, K. E., & Viechtbauer, W. (2006). Patterns of mean-level change in personality traits across the life course: A meta-analysis of longitudinal studies. Psychological Bulletin, 132(1), 1–25.
  26. Roberts, B. W., Luo, J., Briley, D. A., Chow, P. I., Su, R., & Hill, P. L. (2017). A systematic review of personality trait change through intervention. Psychological Bulletin, 143(2), 117–141.
  27. Stieger, M., Flückiger, C., Rüegger, D., Kowatsch, T., Roberts, B. W., & Allemand, M. (2021). Changing personality traits with the help of a digital personality change intervention. Proceedings of the National Academy of Sciences, 118(8), e2017548118.
  28. McCrae, R. R., & Costa, P. T. (1989). Reinterpreting the Myers-Briggs Type Indicator from the perspective of the five-factor model of personality. Journal of Personality, 57(1), 17–40.
  29. Furnham, A. (1996). The big five versus the big four: The relationship between the Myers-Briggs Type Indicator (MBTI) and NEO-PI five factor model of personality. Personality and Individual Differences, 21(2), 303–307.
  30. Bess, T. L., & Harvey, R. J. (2002). Bimodal score distributions and the Myers-Briggs Type Indicator: Fact or artifact? Journal of Personality Assessment, 78(1), 176–186.
  31. Pittenger, D. J. (2005). Cautionary comments regarding the Myers-Briggs Type Indicator. Consulting Psychology Journal: Practice and Research, 57(3), 210–221.
  32. Pletzer, J. L., Bentvelzen, M., Oostrom, J. K., & de Vries, R. E. (2019). A meta-analysis of the relations between personality and workplace deviance: Big Five versus HEXACO. Journal of Vocational Behavior, 112, 369–383.
  33. Thielmann, I., Spadaro, G., & Balliet, D. (2020). Personality and prosocial behavior: A theoretical framework and meta-analysis. Psychological Bulletin, 146(1), 30–90.
  34. Ashton, M. C., Lee, K., & Goldberg, L. R. (2007). The IPIP–HEXACO scales: An alternative, public-domain measure of the personality constructs in the HEXACO model. Personality and Individual Differences, 42(8), 1515–1526.
  35. Vazire, S. (2010). Who knows what about a person? The self–other knowledge asymmetry (SOKA) model. Journal of Personality and Social Psychology, 98(2), 281–300.
  36. Connelly, B. S., & Ones, D. S. (2010). An other perspective on personality: Meta-analytic integration of observers’ accuracy and predictive validity. Psychological Bulletin, 136(6), 1092–1122.

How we write guides: every research claim cites a peer-reviewed source, effect sizes are reported as published, and advice that goes beyond the evidence is labelled as a practical tip. See our methodology. Found an error? Email support@64types.app.

Related guides

MBTI vs Big Five: how the 16 types map onto the scientific model

How each MBTI letter corresponds to a Big Five trait (McCrae & Costa, 1989), what the Big Five adds, and which test to use for what. With sources.

Is the MBTI scientifically valid? What the research actually says

The MBTI’s four scales measure real traits, but the 16 “types” are not. A balanced, sourced look at reliability, validity, retest problems and what is missing.

What is the HEXACO model? Honesty-Humility, the sixth personality factor

HEXACO adds a sixth trait, Honesty-Humility, to the Big Five. What it measures, how it differs from Agreeableness, and what research shows it predicts.