7 Alternative Personality Models Explained
Psychologists have proposed many taxonomies to understand personality.
Here are seven of the most popular:
1. Eysenck’s three-factor PEN model
Until his death in 1998, personality expert Hans Eysenck was the most cited psychologist in academic literature (Larsen et al., 2017).
Eysenck proposed a three-factor personality model often referred to by its initials, PEN (Funder, 2001; Larsen et al., 2017):
- Psychoticism
A high scorer, typically described as a “loner,” lacks empathy and can have a history of cruelty and criminal acts. They may also display heightened creativity and impulsivity.
- Extraversion
Increased sociability further up the scale is linked to assertiveness, liveliness, and playfulness.
- Neuroticism
The more neurotic may experience heightened irritability, anxiousness, guilt, and a lack of self-esteem.
In recent years, the PEN model has largely been superseded by five- or six-factor models (Larsen et al., 2017).
2. Cattell’s 16 personality factor model
Born in England in 1905, Raymond Cattell later went to the United States to research how to identify and measure the units of personality (Larsen et al., 2017).
Cattell’s model soon became significantly more fine-grained than others.
Here are his 16 distinct personality traits, along with descriptions of possible behavior at the low and high ends of each range (Cattell et al., 2008):
Low Range |
High Range |
Warmth |
Reserved, impersonal, distant |
Warm-hearted, caring, attentive to others |
Reasoning |
Concrete, lower mental capacity |
Abstract, bright, fast-learner |
Emotional stability |
Reactive, affected by feelings |
Emotionally stable, adaptive, mature |
Dominance |
Deferential, cooperative, avoids conflict |
Dominant, forceful, assertive |
Liveliness |
Serious, restrained, careful |
Enthusiastic, animated, spontaneous |
Rule-consciousness |
Expedient, nonconforming |
Rule-conscious, dutiful |
Social boldness |
Shy, timid, threat-sensitive |
Socially bold, venturesome, thick-skinned |
Sensitivity |
Tough, objective, unsentimental |
Sensitive, aesthetic, tender-minded |
Vigilance |
Trusting, unsuspecting, accepting |
Vigilant, suspicious, skeptical, wary |
Abstractedness |
Practical, grounded, down-to-earth |
Abstracted, imaginative, idea-oriented |
Privateness |
Forthright, genuine, artless |
Private, discreet, non-disclosing |
Apprehension |
Self-assured, unworried, complacent |
Apprehensive, self-doubting, worried |
Openness to change |
Traditional, attached to familiar |
Open to change, experimenting |
Self-reliance |
Group-orientated, affiliative |
Self-reliant, solitary, individualistic |
Perfectionism |
Tolerates disorder, unexacting, flexible |
Perfectionistic, organized, self-disciplined |
Tension |
Relaxed, placid, patient |
Tense, high energy, driven |
Subsequent research suggests we can group individual traits into fewer, overarching factors (Cattell et al., 2008; Larsen et al., 2017).
3. Big Five traits model
The Big Five traits model is usually regarded as the most popular and widely tested personality model. It consists of five separate traits, described below with examples characteristic of individuals at the high end of each trait (Costa & McCrae, 1976, 1992; Cooper, 2021).
- Openness to experience: Imaginative, novelty-seeking, and tolerant.
- Conscientiousness: Self-disciplined, motivated to achieve, and competent
- Extraversion: Assertive, warm, gregarious, and active
- Agreeableness: Cooperative, straightforward, modest, and trusting
- Neuroticism: Hostile, depressed, angry, and anxious
Our article, Using the Big Five Personality Traits (OCEAN) in Practice offers a deep dive into each of the Big Five and how they impact our lives.
4. HEXACO model
The HEXACO model of personality arising from Ashton and Lee’s (2007) cross-cultural research identifies an additional dimension not found in the Big Five trait model (Cooper, 2021), which is honesty–humility.
While the HEXACO model’s emotionality, extraversion, agreeableness, conscientiousness, and openness to experience map closely to the earlier model, honesty–humility recognizes the importance of sincerity, modesty, avoiding greed, and fairness (Cooper, 2021).
5. Myers-Briggs Type Indicator
The work of psychoanalyst Carl Jung influenced the Myers-Briggs Type Indicator (MBTI) (Larsen et al., 2017).
Rather than score against a scale, individuals are placed in distinct categories, for example (Larsen et al., 2017):
- Extraversion versus introversion
- Sensing versus intuition
- Thinking versus feeling
- Judging versus perceiving
Despite over 3 million people taking the test worldwide and its popularity in the business world, academics and researchers typically disregard it in favor of personality measures that exist in degrees rather than clear-cut, individual labels (Larsen et al., 2017).
6. Enneagram of Personality
The Enneagram of Personality is another popular personality framework, identifying nine interconnected personality types, such as the reformer/perfectionist, the individualist, and the enthusiast/adventurer. Each has a set of characteristic motivations, behavioral patterns, and fears (Daniels & Price, 2009).
Rather than focusing solely on traits, the model examines core drives and coping styles to understand how we respond to inner and outer challenges.
While many coaches find the Enneagram approach valuable for building on core motivations and self-awareness, psychologists highlight the lack of large-scale, peer-reviewed research (Huber, 2020).
7. The dark triad
The dark triad refers to an individual’s willingness to manipulate or exploit others and act in a callous way. Three personality traits are believed to be involved (Cooper, 2021).
- Narcissism
Being high in this trait might indicate a grandiose person, boastful or exaggerating their accomplishments, entitled, and with a strong need for admiration
- Machiavellianism
Someone high in this trait engages in strategic and most likely underhand manipulation and deception and adopts an exploitative interpersonal style.
- Psychopathy
People high in this trait lack empathy or remorse and risk involvement in criminal behavior.
Researchers have found strong correlations between all three traits (Cooper, 2021).
What our readers think
Great article. Thank you. Understanding personality traits is crucial for mental health professionals working with clients.