Full context:   The approach with most support in the field is called the Big Five, which are openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism (or emotional stability), often memorized as "OCEAN". These components are generally stable over time, and about half of the variance appears to be attributable to a person's genetics rather than the effects of one's environment. These five factors are made up of two aspects each as well as many facets (e.g., openness splits into experiencing and intellect, which each further split into facets like fantasy and ideas). These five factors also show correlations with each other that suggest higher order meta-traits (e.g., factor beta, which combines openness and extraversion to form a meta-trait associated with mental and physical exploration). There are several personality frameworks that recognize the Big Five factors and there are thousands of measures of personality that can be used to measure specific facets as well as general traits.