Overview
The Big Five Model (Five Factor Model) is the most widely accepted framework in personality psychology, describing human personality through five broad dimensions: Extraversion, Agreeableness, Conscientiousness, Openness to Experience, and Neuroticism. Developed through decades of factor-analytic research by scholars including Costa and McCrae, it has been replicated across 50+ cultures and languages, making it the gold standard for personality assessment in both research and applied settings such as compatibility analysis.