Costa & McCrae

Costa and McCrae are psychologists known for developing the Five Factor Model of personality, often referred to as the "Big Five." This model identifies five core traits that encompass human personality: openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism. Each trait exists on a spectrum, meaning individuals can show varying degrees of these qualities. The Big Five framework helps in understanding how personality influences behavior, relationships, and preferences, making it a useful tool in psychology, counseling, and even areas like business and education.