Big Five OCEAN Personality Framework Cheat Sheet

The Big Five personality model (also called the Five-Factor Model, or FFM) is the most scientifically validated framework for describing human personality, organizing individual differences into five broad trait dimensions: Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism — remembered by the acronym OCEAN. Developed through convergent factor-analytic research by independent teams across decades, and operationalized in instruments such as the NEO-PI-R by Costa and McCrae, it is the gold standard in personality psychology, clinical research, and organizational science. Unlike type-based systems that force discrete categories, the Big Five places each person on a continuous spectrum for every trait, capturing the full range of human variation. A critical insight for practitioners: the model describes what someone tends to do, not why — and a score is only meaningful relative to the norm group and context in which it was obtained.