Personality at work: what it does and doesn't predict

Research using trait models suggests personality has meaningful but modest associations with work outcomes. For example, a 2002 meta-analysis by Judge and colleagues found that traits such as extraversion and conscientiousness were associated with leadership emergence and effectiveness, but personality explained only part of the picture. Skills, experience, cognitive ability and the environment matter a great deal. The Enneagram hasn't been validated for predicting work outcomes, but it can help people understand their working style.

Work behavior results from person and situation together. A cautious person may thrive in a role that rewards careful risk assessment and struggle in one that rewards speed. The same traits can be assets or liabilities depending on the job. That's why personality insights are most useful for fit and self-management, and least useful as a ranking of who is better.

Where the Enneagram can add value is in describing what people pay attention to at work. A One notices quality issues, a Six notices risks, a Seven notices opportunities and a Nine notices tension in the team. Naming these tendencies can make it easier to divide work sensibly and to understand why colleagues prioritize differently.