Big5
(SLOAN)
Big Five (SLOAN)
The Big Five is the most scientifically accurate typing system among the personality metrics that form typology. The Big Five measures five factors: Extroversion, Neuroticism, Conscientiousness, Agreeableness, and Openness. Each is measured according to specific criteria and scored on a scale, meaning that a person may be higher or lower on each trait. For instance, if an individual scores high in extraversion, they will be considered a Social (S) type, but if the person has a low score, they will be typed as a Reserved (R) type. This is how Big Five (SLOAN) types are formed. Examples of Big Five types include SLOAI and RCUEN.
The SLOAN model is a typology derived from the Big Five traits. Its coding system offers a concise way to describe individual personality profiles based on Big Five assessments.
Extraversion: High scores - Social (S). Low scores - Reserved (R).
Neuroticism: High scores - Limbic (L). Low scores - Calm (C).
Conscientiousness: High scores - Organized (O). Low scores - Unstructured (U).
Agreeableness: High scores - Agreeable (A). Low scores - Egocentric (E).
Openness: High scores - Inquisitive (I). Low scores - Non-curious (N).
The criteria measured:
Extraversion: Friendliness, gregariousness, assertiveness, activity level, excitement-seeking, and cheerfulness.
Neuroticism: Anxiety, anger, depression, self-consciousness, immoderation, and vulnerability.
Conscientiousness: Self-efficacy, orderliness, dutifulness, achievement-striving, self-discipline, and cautiousness.
Agreeableness: Trust, morality, altruism, cooperation, modesty, and sympathy.
Openness: Imagination, artistic interests, emotionality, adventurousness, intellect, and liberalism.
Reserved
Tends to be quiet, reflective, and energized by solitude. Prefers low-stimulation environments and smaller social settings.
Social
Tends to be outgoing, talkative, and energized by social interaction. Comfortable in group settings and often seeks external stimulation.
Limbic
More sensitive to stress, emotional fluctuations, and negative emotions. May react more strongly to challenges or uncertainty.
Calm
Generally emotionally stable, resilient, and less prone to stress. Tends to stay composed and balanced even in difficult situations.
Organized
Tends to be structured, reliable, and goal-oriented. Prefers planning, order, and completing tasks efficiently.
Unstructured
More spontaneous, flexible, and relaxed about rules or schedules. May prefer adapting to situations over following strict plans.
Accommodating
More self-focused and assertive in pursuing personal goals. May prioritize their own needs over group consensus or social harmony.
Egocentric
Cooperative, empathetic, and considerate of others’ needs. Tends to avoid conflict and values harmony in relationships.
Non-curious
Inquisitive
Open to new ideas, experiences, and intellectual exploration. Enjoys learning, creativity, and thinking in abstract or imaginative ways.
More practical, down-to-earth, and focused on routine or familiar experiences. Prefers stability and may show less interest in novelty or abstract thinking.
History:
The Big Five personality traits—openness, conscientiousness, extraversion, agreeableness, and neuroticism—emerged from early 20th-century psychological research aimed at identifying fundamental dimensions of human personality. In 1936, psychologists Gordon Allport and Henry Odbert compiled a list of 4,504 adjectives describing observable and relatively permanent traits, laying the groundwork for future studies. Subsequent factor analyses by researchers such as Raymond Cattell, who reduced the list to 171 traits and later to 35, and Donald Fiske, who identified five factors in 1949, further refined these dimensions. The model gained prominence in the 1980s and 1990s through the work of Lewis Goldberg and others, becoming a widely accepted framework for understanding personality.