Hierarchical structure of the Eysenck Personality Inventory in a large population sample: Goldberg's trait-tier mapping procedure

► We examined the hierarchical structure of the Eysenck Personality Inventory (EPI). ► Neuroticism could be differentiated into 4 facets, Extraversion into 6, and the Lie scale into 2. ► These facet reflect both early Eysenckian theory and practical utility in contemporary work.