Personality and work performance: what the meta-analyses found

What did the foundational meta-analysis find?

The study that put personality and job performance on the same page pooled validity studies across five occupational groups, professionals, police, managers, sales staff and skilled workers, against supervisor ratings, training results and personnel records (Barrick & Mount, 1991).

• Conscientiousness related consistently to every criterion, in every occupational group. No other dimension did that, across proficiency ratings, training outcomes and personnel data alike.
• Extraversion related to performance in managerial and sales roles, a narrower pattern that fits roles where influence and persuasion are a larger part of the job.
• Openness and Extraversion both related to training proficiency across occupations, a separate criterion from doing an established job well.
• The remaining dimensions were small where they appeared. Agreeableness and Emotional Stability showed relations in some groups and criteria and not others, and modestly where they did.

The paper reports no single coefficient for Conscientiousness to quote as settled fact. What it reports is a pattern that held up across occupations, a sturdier kind of evidence than one large correlation from one sample.

Does personality also predict job satisfaction?

A separate meta-analysis asked a different question: not whether a trait profile predicts how well someone performs, but whether it predicts how satisfied they feel in the role. Pooling 334 correlations from 163 independent samples, the estimated relations with overall job satisfaction were Neuroticism -.29, Conscientiousness .26, Extraversion .25, Agreeableness .17 and Openness .02, with the five traits together correlating .41 with satisfaction (Judge, Heller & Mount, 2002).

Only the Neuroticism and Extraversion relationships generalised consistently across the studies: their link varied less from sample to sample than the others did, not that Conscientiousness and Agreeableness do nothing for satisfaction. People who run calmer under stress and people who draw more energy from others tend to report liking their work more, on average.

This is not evidence that a satisfied worker is a productive one, or the reverse. Performance and satisfaction are different outcomes, and a person can be good at a job they find dull, or content in one they perform only adequately.

How does personality shape coping at work?

Deadlines, difficult colleagues and bad days happen regardless of personality, which instead relates to what a person tends to do about them. A meta-analysis of 2,653 effect sizes from 165 samples and over 33,000 participants found personality only weakly related to broad categories like engaging with a problem versus disengaging from it, but all five traits predicted specific strategies (Connor-Smith & Flachsbart, 2007).

• Extraversion and Conscientiousness went with more problem-solving and cognitive restructuring, tackling the thing directly or reframing it.
• Neuroticism went with more wishful thinking, withdrawal and emotion-focused coping, and, like Extraversion, with more support-seeking.
• The relation was stronger in younger samples, in samples under more stress, and where coping was measured as a general tendency rather than a response to one event.

The finding is about which strategies a person reaches for, not who copes well and who copes badly. Problem-solving is not always the right tool, and withdrawal is sometimes the sensible move. What the trait predicts is the reflex, not the outcome.

Does the same pattern show up before the first job?

Work performance has an academic analogue, and it points the same direction. Drawing on cumulative samples of more than 70,000 people, mostly from tertiary education, a meta-analysis found academic performance correlated significantly with Conscientiousness, Agreeableness and Openness, and that the Conscientiousness relationship was largely independent of measured intelligence (Poropat, 2009). Once earlier performance was controlled for, Conscientiousness added about as much to predicting later results as intelligence did, close to the workplace finding: one trait doing steady, general work by way of ordinary behaviour, not raw ability.

How much does personality matter next to everything else?

Comparative research puts a boundary on all of this. Reviewing prospective longitudinal studies of mortality, divorce and occupational attainment, one analysis found personality's effect on all three was indistinguishable from the effect of socioeconomic status or measured cognitive ability (Roberts et al., 2007), neither smaller nor larger. Training, opportunity, health and plain luck all keep doing real work in a career that no trait score captures.

For one person, the honest use of this evidence is narrow. High Conscientiousness is a real asset in most roles, and it is still an average across thousands of people, not a fixed outcome for your own next project. Lower Conscientiousness does not cap a career either: the behaviours that predict performance respond to structure, and structure can be built without rebuilding a personality.

This is also why none of it belongs in a hiring decision. A questionnaire answered by someone who wants a job is not the same measurement as one answered for reflection, and a score near a band boundary can land on either side of it on a retake, fine for reflection and unacceptable for someone's livelihood. Selection also carries fairness requirements a self-report wellness tool was never built to meet.

How does Wellington measure this?

Wellington is a science-based personality assessment from Therabot Labs LLC. It measures personality as continuous traits, built on the Big Five and HEXACO models, and writes the results back as a personal report rather than a type.

The free Snapshot is 60 questions, about 7 minutes, covering 6 dimensions, Extraversion, Agreeableness, Conscientiousness, Emotional Stability, Openness to Experience, Honesty-Humility, each with a written page. Every trait is reported as a percentile against the reference sample. The three bands, Quiet below the 30th percentile, Balanced to the 70th, High above, and the Portrait names exist to make the result easier to talk about; the percentile is the measurement, and it is always shown alongside. The first ten questions are answered before anything is asked of you; after question ten you sign in with an email so answers are saved and results can be shown.

The Wellington Membership, $4.99 a month, adds the Portrait, 336 further questions, reaching 90 traits including every facet beneath the six dimensions, then continues toward all 255 traits. Norms are provisional while the norming sample is completed.

Wellington is a wellness tool for reflection, not a medical or psychological diagnosis, and it does not replace care from a qualified professional. Wellington is not built for hiring, selection or promotion, and it should not be used to assess anyone other than yourself. You can export or delete your data from your dashboard at any time.

Questions people ask

Which personality trait predicts job performance most consistently?

Conscientiousness. In the meta-analysis that established the finding, it was the one Big Five dimension related to performance across every occupational group studied, and it held for supervisor ratings, training results and personnel records alike (Barrick & Mount, 1991).

Does Extraversion make someone better at their job?

Only in some roles. Extraversion related to performance in managerial and sales work, and to training proficiency generally, but not to performance in most other roles (Barrick & Mount, 1991). It relates more broadly to job satisfaction than to job performance (Judge, Heller & Mount, 2002).

Can personality tests be used to hire or screen candidates?

Wellington is not designed for that and is not offered for it. Answers shift when a job is at stake, group-level findings are too loose to rank two people, and score bands are wide enough that a retake can move someone across a boundary. Selection also carries fairness requirements a consumer wellness tool does not meet.

Does personality matter more than skills or intelligence for career success?

No. Personality traits predict occupational attainment about as well as socioeconomic background or measured cognitive ability, not better than either (Roberts et al., 2007). Training, opportunity and circumstance still account for a great deal that no trait score touches.