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More on the "Big Five" Five-Factor Model of Personality

lpetrich

lpetrich

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I mentioned the Big Five model earlier in Theories of personality ( Big Five personality traits,  Hierarchical structure of the Big Five)
  • Openness to experience (inventive/curious vs. consistent/cautious)
  • Conscientiousness (efficient/organized vs. easy-going/careless)
  • Extraversion (outgoing/energetic vs. solitary/reserved) (often spelled "extroversion")
  • Agreeableness (friendly/compassionate vs. analytical/detached)
  • Neuroticism (sensitive/nervous vs. secure/confident) (may also be called emotional (in)stability)
Drew D'Agostino has a nice series on the Big Five. In Personality Neuroscience #4: The Big Five personality traits (from Metatraits of the Big Five differentially predict engagement and restraint of behavior. - PubMed - NCBI) he groups them into two supertraits:
  • Stability - "Serotonin is a neurotransmitter that is known to stabilize information, disrupt impulses, and allow you to focus on goals."
    • Neuroticism: (-) emotional stability
    • Conscientiousness: motivational stability
    • Agreeableness: social stability
  • Plasticity - "Dopamine is a different neurotransmitter that facilitates exploration, learning, and cognitive flexibility. It controls your sensitivity to rewards and potential rewards."
    • Extroversion
    • Openness
DDA followed that post with a post on each of the five traits. Each one has two subtraits:
  • Openness - An individual’s ability and tendency to explore and create new experiences, manifesting curiosity, imagination, perception, and creativity.
    • Intellect, which refers to cognitive engagement with abstract information and ideas.
    • Openness to experience, which refers to cognitive engagement with perceptual and sensory information.
  • Conscientiousness - An individual’s ability and tendency to pursue non-immediate goals and follow a set of rules (either self-imposed or imposed by others).
    • Industriousness, which refers to the ability to suppress disruptive impulses and pursue non-immediate goals
    • Orderliness, which refers to the ability to adopt and follow rules (either self-imposed or imposed by others).
  • Extroversion - An individual’s ability and tendency to explore, interact, and engage with external rewards (including social, material, and experiential rewards).
    • Assertiveness, which refers to incentive reward sensitivity - drive toward goals.
    • Enthusiasm, which refers to consummatory reward sensitivity - enjoyment of actual or imagined goal attainment.
  • Agreeableness - An individual’s ability and tendency to understand the perspectives of others and adjust their behavior to accommodate them.
    • Compassion, which refers to emotional attachment to and concern for others.
    • Politeness, which refers to the tendency to suppress and avoid impulses that are aggressive or violate norms.
  • Neuroticism - An individual’s tendency to experience feelings like anxiety, fear, anger, and panic.
    • Volatility, which refers to active defense to avoid or eliminate threats.
    • Withdrawal, which refers to passive avoidance: inhibition of goals, interpretations, and strategies, in response to uncertainty or error.

Personality Neuroscience #5: The biological causes of Openness
Personality Neuroscience #6: The biological causes of Conscientiousness
Personality Neuroscience #7: The biological causes of Extraversion
Personality Neuroscience #8: The biological causes of Agreeableness
Personality Neuroscience #9: The biological causes of Neuroticism
 
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Dave D'Agostino also discusses biological factors.
  • Openness
    • + Working Memory
    • +? Dopamine
    • - Latent inhibition (getting accustomed to common stimuli)
  • Conscientiousness
    • + Connections between (cognitive control network) and (salience network: about paying attention)
    • + Prefrontal Cortex (brain part) volume
  • Extroversion
    • (Assertiveness) + Dopamine system (pursuit of rewards, though not enjoyment of them)
    • (Enthusiasm) + Opiate system (enjoyment of rewards)
  • Agreeableness
    • (Politeness) + Serotonin
    • (Politeness) - Testosterone
    • (Compassion) + Empathy-system connections and activity (mirror neurons)
  • Neuroticism
    • + Fight-flight-freeze system (FFFS) (quick responses to danger)
    • + Behavioral-inhibition system (BIS) (responds to threats of punishment, confusion, and anger)
    • + HPA (hypothalamus-pituitary-adrenal) axis (regulates response to stress)

From twin studies, heritability of all five factors is around 50%. But one can nevertheless train oneself to have more or less of some factor. Also, as we age, we get more Conscientiousness, more Agreeableness, and less Neuroticism. In short, more Stability.
 
THE FIVE UNIVERSAL SUPERTRAITS OF THE HUMAN PERSONALITY Author Bálint Kőszegi lists the Big Five factors and compares them to other theories.

BK starts with biological basis:
  • Openness: Increased breadth of mental associations
  • Conscientiousness: Increased ability to inhibit impulses (prefrontal cortex)
  • Extroversion: Increased sensitivity to reward (dopamine, midbrain)
  • Agreeableness: Increased empathy and regard for others
  • Neuroticism: Increased sensitivity to threat (serotonin, limbic system)

Other theories, with approximate matches. LG = Lewis Goldberg, RC = Raymond Cattell, HE = Hans Eysenck, AH = Allan Harkness, MBTI = Myers-Briggs Type Indicator, inspired by Carl Jung, HBDI = Hermann Brain Dominance Instrument, DISC = Dominance, Influence, Steadiness, Conscientiousness.

-NeuroticismExtroversionOpennessAgreeablenessConscientiousness
LG's Lexical Big 5(-) Emotional StabilitySurgencyIntellect/CultureAgreeablenessConscientiousness
RC's 5 Global FactorsAnxietyExtroversionReceptivity(-) IndependenceSelf-Control
HE's P-E-N ModelNeuroticismExtroversion(-) Psychoticism(-) Psychoticism
AH's MMPI-2 Psy-5Negative EmotionalityPositive EmotionalityPsychoticism(-) Aggressiveness(-) Disconstraint
MBTI-E ExtroversionN IntuitionF FeelingJ Judging
(-) MBTI-I IntroversionS SensingT ThinkingP Perceiving
HBDI--D ImaginativeC Interpersonal-
(-) HBDI--B SequentialA Analytical-
DISC-Active (D & I)-People (I & S)-
(-) DISC-Passive (S & C)-Task (D & C)-

Two of the theories features mixtures of two of the Big Five factors.

DISC:
Dominance+E -A
Influence+E +A
Steadiness-E +A
Conscientiousness-E -A

Hippocrates's Four-Humor Theory (~400 BCE)
Sanguine+E -N
Choleric+E +N
Phlegmatic-E -N
Melancholic-E +N
 
lpetrich said:
I mentioned the Big Five model earlier in Theories of personality ( Big Five personality traits,  Hierarchical structure of the Big Five)
  • Openness to experience (inventive/curious vs. consistent/cautious)
  • Conscientiousness (efficient/organized vs. easy-going/careless)
  • Extraversion (outgoing/energetic vs. solitary/reserved) (often spelled "extroversion")
  • Agreeableness (friendly/compassionate vs. analytical/detached)
  • Neuroticism (sensitive/nervous vs. secure/confident) (may also be called emotional (in)stability)
Drew D'Agostino has a nice series on the Big Five. In Personality Neuroscience #4: The Big Five personality traits (from Metatraits of the Big Five differentially predict engagement and restraint of behavior. - PubMed - NCBI) he groups them into two supertraits:
  • Stability - "Serotonin is a neurotransmitter that is known to stabilize information, disrupt impulses, and allow you to focus on goals."
    • Neuroticism: (-) emotional stability
    • Conscientiousness: motivational stability
    • Agreeableness: social stability
  • Plasticity - "Dopamine is a different neurotransmitter that facilitates exploration, learning, and cognitive flexibility. It controls your sensitivity to rewards and potential rewards."
    • Extroversion
    • Openness
DDA followed that post with a post on each of the five traits. Each one has two subtraits:
  • Openness - An individual’s ability and tendency to explore and create new experiences, manifesting curiosity, imagination, perception, and creativity.
    • Intellect, which refers to cognitive engagement with abstract information and ideas.
    • Openness to experience, which refers to cognitive engagement with perceptual and sensory information.
  • Conscientiousness - An individual’s ability and tendency to pursue non-immediate goals and follow a set of rules (either self-imposed or imposed by others).
    • Industriousness, which refers to the ability to suppress disruptive impulses and pursue non-immediate goals
    • Orderliness, which refers to the ability to adopt and follow rules (either self-imposed or imposed by others).
  • Extroversion - An individual’s ability and tendency to explore, interact, and engage with external rewards (including social, material, and experiential rewards).
    • Assertiveness, which refers to incentive reward sensitivity - drive toward goals.
    • Enthusiasm, which refers to consummatory reward sensitivity - enjoyment of actual or imagined goal attainment.
  • Agreeableness - An individual’s ability and tendency to understand the perspectives of others and adjust their behavior to accommodate them.
    • Compassion, which refers to emotional attachment to and concern for others.
    • Politeness, which refers to the tendency to suppress and avoid impulses that are aggressive or violate norms.
  • Neuroticism - An individual’s tendency to experience feelings like anxiety, fear, anger, and panic.
    • Volatility, which refers to active defense to avoid or eliminate threats.
    • Withdrawal, which refers to passive avoidance: inhibition of goals, interpretations, and strategies, in response to uncertainty or error.

Personality Neuroscience #5: The biological causes of Openness
Personality Neuroscience #6: The biological causes of Conscientiousness
Personality Neuroscience #7: The biological causes of Extraversion
Personality Neuroscience #8: The biological causes of Agreeableness
Personality Neuroscience #9: The biological causes of Neuroticism
Click to expand...

All psychiatrists I've asked about big five have said that it's a flawed test, because we're likely to switch groups a lot, even within the same day. It seems to be a pop-psychological thing, more used to sell books than to actually help anyone

I don't have an opinion myself. I'm not a psychologist/psychiatrist. I don't know enough to argue for or against.
 
DrZoidberg said:
lpetrich said:
I mentioned the Big Five model earlier in Theories of personality ( Big Five personality traits,  Hierarchical structure of the Big Five)
  • Openness to experience (inventive/curious vs. consistent/cautious)
  • Conscientiousness (efficient/organized vs. easy-going/careless)
  • Extraversion (outgoing/energetic vs. solitary/reserved) (often spelled "extroversion")
  • Agreeableness (friendly/compassionate vs. analytical/detached)
  • Neuroticism (sensitive/nervous vs. secure/confident) (may also be called emotional (in)stability)
Drew D'Agostino has a nice series on the Big Five. In Personality Neuroscience #4: The Big Five personality traits (from Metatraits of the Big Five differentially predict engagement and restraint of behavior. - PubMed - NCBI) he groups them into two supertraits:
  • Stability - "Serotonin is a neurotransmitter that is known to stabilize information, disrupt impulses, and allow you to focus on goals."
    • Neuroticism: (-) emotional stability
    • Conscientiousness: motivational stability
    • Agreeableness: social stability
  • Plasticity - "Dopamine is a different neurotransmitter that facilitates exploration, learning, and cognitive flexibility. It controls your sensitivity to rewards and potential rewards."
    • Extroversion
    • Openness
DDA followed that post with a post on each of the five traits. Each one has two subtraits:
  • Openness - An individual’s ability and tendency to explore and create new experiences, manifesting curiosity, imagination, perception, and creativity.
    • Intellect, which refers to cognitive engagement with abstract information and ideas.
    • Openness to experience, which refers to cognitive engagement with perceptual and sensory information.
  • Conscientiousness - An individual’s ability and tendency to pursue non-immediate goals and follow a set of rules (either self-imposed or imposed by others).
    • Industriousness, which refers to the ability to suppress disruptive impulses and pursue non-immediate goals
    • Orderliness, which refers to the ability to adopt and follow rules (either self-imposed or imposed by others).
  • Extroversion - An individual’s ability and tendency to explore, interact, and engage with external rewards (including social, material, and experiential rewards).
    • Assertiveness, which refers to incentive reward sensitivity - drive toward goals.
    • Enthusiasm, which refers to consummatory reward sensitivity - enjoyment of actual or imagined goal attainment.
  • Agreeableness - An individual’s ability and tendency to understand the perspectives of others and adjust their behavior to accommodate them.
    • Compassion, which refers to emotional attachment to and concern for others.
    • Politeness, which refers to the tendency to suppress and avoid impulses that are aggressive or violate norms.
  • Neuroticism - An individual’s tendency to experience feelings like anxiety, fear, anger, and panic.
    • Volatility, which refers to active defense to avoid or eliminate threats.
    • Withdrawal, which refers to passive avoidance: inhibition of goals, interpretations, and strategies, in response to uncertainty or error.

Personality Neuroscience #5: The biological causes of Openness
Personality Neuroscience #6: The biological causes of Conscientiousness
Personality Neuroscience #7: The biological causes of Extraversion
Personality Neuroscience #8: The biological causes of Agreeableness
Personality Neuroscience #9: The biological causes of Neuroticism
Click to expand...

All psychiatrists I've asked about big five have said that it's a flawed test, because we're likely to switch groups a lot, even within the same day. It seems to be a pop-psychological thing, more used to sell books than to actually help anyone

I don't have an opinion myself. I'm not a psychologist/psychiatrist. I don't know enough to argue for or against.
Click to expand...

That's not the Big Five, you are thinking of the Myer's Briggs, which is not really taken seriously in the personality psych community, but laypeople people seem to eat it up, and it is sold to hiring managers as a way of screening candidates. I think it is more similar to astrology and horoscopes than serious science, although that may be harsh. It's basically a failed model that got really popular among non-psychologists and business people.

The Big Five on the other hand, is taken seriously. Although, it is somewhat controversial (or rather, some people simply don't find it appealing), because it is an empirically derived model, essentially the result of factor analysis on personality survey data. In terms of explanatory value, it is probably the most robust model in personality psych, which is often criticized for its lack of rigor.
 
J842P said:
DrZoidberg said:
lpetrich said:
I mentioned the Big Five model earlier in Theories of personality ( Big Five personality traits,  Hierarchical structure of the Big Five)
  • Openness to experience (inventive/curious vs. consistent/cautious)
  • Conscientiousness (efficient/organized vs. easy-going/careless)
  • Extraversion (outgoing/energetic vs. solitary/reserved) (often spelled "extroversion")
  • Agreeableness (friendly/compassionate vs. analytical/detached)
  • Neuroticism (sensitive/nervous vs. secure/confident) (may also be called emotional (in)stability)
Drew D'Agostino has a nice series on the Big Five. In Personality Neuroscience #4: The Big Five personality traits (from Metatraits of the Big Five differentially predict engagement and restraint of behavior. - PubMed - NCBI) he groups them into two supertraits:
  • Stability - "Serotonin is a neurotransmitter that is known to stabilize information, disrupt impulses, and allow you to focus on goals."
    • Neuroticism: (-) emotional stability
    • Conscientiousness: motivational stability
    • Agreeableness: social stability
  • Plasticity - "Dopamine is a different neurotransmitter that facilitates exploration, learning, and cognitive flexibility. It controls your sensitivity to rewards and potential rewards."
    • Extroversion
    • Openness
DDA followed that post with a post on each of the five traits. Each one has two subtraits:
  • Openness - An individual’s ability and tendency to explore and create new experiences, manifesting curiosity, imagination, perception, and creativity.
    • Intellect, which refers to cognitive engagement with abstract information and ideas.
    • Openness to experience, which refers to cognitive engagement with perceptual and sensory information.
  • Conscientiousness - An individual’s ability and tendency to pursue non-immediate goals and follow a set of rules (either self-imposed or imposed by others).
    • Industriousness, which refers to the ability to suppress disruptive impulses and pursue non-immediate goals
    • Orderliness, which refers to the ability to adopt and follow rules (either self-imposed or imposed by others).
  • Extroversion - An individual’s ability and tendency to explore, interact, and engage with external rewards (including social, material, and experiential rewards).
    • Assertiveness, which refers to incentive reward sensitivity - drive toward goals.
    • Enthusiasm, which refers to consummatory reward sensitivity - enjoyment of actual or imagined goal attainment.
  • Agreeableness - An individual’s ability and tendency to understand the perspectives of others and adjust their behavior to accommodate them.
    • Compassion, which refers to emotional attachment to and concern for others.
    • Politeness, which refers to the tendency to suppress and avoid impulses that are aggressive or violate norms.
  • Neuroticism - An individual’s tendency to experience feelings like anxiety, fear, anger, and panic.
    • Volatility, which refers to active defense to avoid or eliminate threats.
    • Withdrawal, which refers to passive avoidance: inhibition of goals, interpretations, and strategies, in response to uncertainty or error.

Personality Neuroscience #5: The biological causes of Openness
Personality Neuroscience #6: The biological causes of Conscientiousness
Personality Neuroscience #7: The biological causes of Extraversion
Personality Neuroscience #8: The biological causes of Agreeableness
Personality Neuroscience #9: The biological causes of Neuroticism
Click to expand...

All psychiatrists I've asked about big five have said that it's a flawed test, because we're likely to switch groups a lot, even within the same day. It seems to be a pop-psychological thing, more used to sell books than to actually help anyone

I don't have an opinion myself. I'm not a psychologist/psychiatrist. I don't know enough to argue for or against.
Click to expand...

That's not the Big Five, you are thinking of the Myer's Briggs, which is not highly regarded in the personality psych literature.

The Big Five on the other hand, is taken seriously. Although, it is somewhat controversial (or rather, some people simply don't find it appealing), since essentially it is a purely empirical model, derived from factor analysis on personality survey data.
Click to expand...

Aha... no you're right. sorry
 
My own score:
  • Openness: high
  • Conscientiousness: high
  • Extroversion: low
  • Agreeableness: middle
  • Neuroticism: low

Bálint Kőszegi has a diagram of the hierarchy of factors in the Big Five model. I will turn it into a nested list and add the two superfactors.
  • Stability
    • Conscientiousness
      • Industriousness: Achievement Striving, Competence, Self-Discipline
      • Orderliness: Deliberation, Dutifulness, Order
    • Agreeableness
      • Compassion: Tender-Mindedness, Altruism, Trust
      • Politeness: Compliance, Modesty, Straightforwardness
    • Neuroticism
      • Volatility: Angry Hostility, Impulsiveness
      • Withdrawal: Anxiety, Depression, Self-Consciousness, Vulnerability
  • Plasticity
    • Openness
      • Intellect: Ideas
      • Esthetic Openness: Actions, Aesthetics, Fantasy, Feeling, Values
    • Extroversion
      • Enthusiasm: Gregariousness, Positive Emotions, Warmth, Excitement-Seeking
      • Assertiveness: Activity, Assertiveness, Excitement-Seeking
 
I checked Google Scholar and I counted how many hits:
  • "five-factor model" personality -- 161,000
  • "Big Five" personality -- 227,000
  • "Myers-Briggs" personality -- 35,000
  • MBTI personality -- 20,900
  • Enneagram personality -- 3,170
I must say that I find the Big Five easier to understand than Myers-Briggs.

Personality Dimensions in Nonhuman Animals: A Cross-Species Review (1999)

Their table of the five factors:
NNeuroticism vs. Emotional StabilityAnxiety, depression, vulnerability to stress, moodiness
AAgreeableness vs. AntagonismTrust, tendermindedness, cooperation, lack of aggression
EExtraversion vs. IntroversionSociability, assertiveness, activity, positive emotions
OOpen vs. Closed to ExperienceIdeas/intellect, imagination, creativity, curiosity
CConscientiousness vs. ImpulsivenessDeliberation, self-discipline, dutifulness, order

Authors Samuel Gosling and Oliver John treated Dominance and Activity as separate personality dimensions instead of as subsets of Extroversion, what is typical of our species. In children, however, Activity may be a separate dimension.

They then discussed studies of the behavior of chimpanzees, gorillas, rhesus monkeys, vervet monkeys, hyenas, dogs, cats, donkeys, pigs, rats, guppies, and octopuses. Here is a phylogeny:

Old World simians: (((human, chimp), gorilla), (rhesus monkey, vervet monkey))
Boreoeutheria: ((OWS, rat), ((dog, (hyena, cat)), donkey))
Osteichthyes: (Boreo, guppy)
Eubilateria: (Oste, octopus)

Nearly all species had evidence of Extroversion and Neuroticism, though their expression varied between species. In octopuses, the counterpart of Extroversion was Boldness vs. Avoidance.

Ancestry of neuronal monoamine transporters in the Metazoa note that serotonin and dopamine transporter proteins go back all the way to the ancestral bilaterian, if not further. Meaning that the roots of Extroversion (dopamine) and Neuroticism (serotonin) go back a long way.

Another common one was Agreeableness, though the guppy and the octopus seemed to lack it. Openness is more spottily distributed, and was mostly curiosity-exploration and playfulness, much like human toddlers. The authors propose that this spottiness is from what the animal observers were looking for, since curiosity has been observed in many species.

Conscientiousness was observed only in us and in chimps, though for chimps it was more narrow and it was the low pole of that trait: attention, goal directedness, and erratic, unpredictable, and disorganized behavior. Dogs and cats have a personality factor, Competence, a mixture of Openness and Conscientiousness features, but not anything like what chimps have. So Conscientiousness is likely a recent evolutionary innovation, shared by us and chimps and perhaps other species.
 
Then an interesting bit on sex differences. Women tend to have more Neuroticism than men, for instance, but different species may differ.
To illustrate this point, we collected observer ratings of humans using items previously used in a study of hyenas (Gosling, 1998). In humans, women were described as somewhat higher on N than men; in hyenas, the sex difference was reversed, with males being considerably more high-strung, fearful, and nervous than females (see Fig. 1). What explains this dramatic interaction effect? The key is the difference in social organization: In the hyena clan, dominance rank is transmitted through a matrilineal system, and females are larger than males and more dominant.
Click to expand...
In our species, the Neuroticism score was female +0.1 and male -0.1 -- not a big difference. But for hyenas, it was female -0.5 and male +0.7 -- a much greater difference.
 
I once took a three hundred question quiz to figure out where I fall in these categories, but then my online results disappeared into the ether. Should do another one but I think I could predict my results.

Anyway, related to the thread here's an article out of HBR:

These 3 Personality Traits Affect What You Earn — but Only After Age 40

Being extroverted, disagreeable, and conscientious correlate with higher lifetime earnings.
 
PsyArXiv Preprints -- an archive of psychology preprints. I looked for "Big Five" and "Five Factor", and I found 40 and 26 hits each. But I found nothing for "Myers-Briggs" or "MBTI" -- even less interest than I found in the sources that Google Scholar indexes.
 
Finally, A Personality Quiz Backed By Science | FiveThirtyEight featuring a Big Five test. It also features the identification of personality facets in "The Big Five Inventory–2 (BFI-2)": Colby Personality Lab | Psychology | Colby College

I took the one at the site, and I found:
  • Extraversion 10
    • Sociability 0
    • Assertiveness 12
    • Energy Level 19
  • Agreeableness 56
    • Compassion 44
    • Respectfulness 75
    • Trust 50
  • Conscientiousness 82
    • Organization 88
    • Productiveness 92
    • Responsibility 69
  • Negative Emotionality 15
    • Anxiety 12
    • Depression 31
    • Emotional Volatility 0
  • Open-Mindedness 92
    • Intellectual Curiosity 100
    • Aesthetic Sensitivity 81
    • Creative Imagination 94
Scale: 0 to 100
 
I'll put together the two-subtrait and three-subtrait systems:
  • Stability
    • Conscientiousness
      • Industriousness, Orderliness
      • Organization, Productiveness, Responsibility
    • Agreeableness
      • Compassion, Politeness
      • Compassion, Respectfulness, Trust
    • Neuroticism
      • Volatility, Withdrawal
      • Anxiety, Depression, Emotional Volatility
  • Plasticity
    • Openness
      • Intellect, Esthetic Openness
      • Intellectual Curiosity, Aesthetic Sensitivity, Creative Imagination
    • Extroversion
      • Enthusiasm, Assertiveness
      • Sociability, Assertiveness, Energy Level
Some two-trait and three-trait sets rather obviously correspond, with one trait matching, and the other trait being split in two, but some do not correspond quite as well.
 
fromderinside said:
Remember the Maine! or Colby ME the place where personality Theory was sunk. or alternatively, there is soft science and then there is personality theory science.
Click to expand...
Why Colby ME? There's a Colby College in Waterville, ME.
 
Here's a paper on Big-Five-MBTI correlations: The big five versus the big four: the relationship between the Myers-Briggs Type Indicator (MBTI) and NEO-PI five factor model of personality - ScienceDirect Yes: MBTI = Big Four

There is even less in the professional literature on the ennegram than on the MBTI. The enneagram ("Big Nine?) has these nine types:
  1. The Reformer - principled, purposeful, self-controlled, and perfectionistic
  2. The Helper - generous, demonstrative, people-pleasing, and possessive
  3. The Achiever - adaptable, excelling, driven, and image-conscious
  4. The Individualist - expressive, dramatic, self-absorbed, and temperamental
  5. The Investigator - perceptive, innovative, secretive, and isolated
  6. The Loyalist - engaging, responsible, anxious, and suspicious
  7. The Enthusiast - spontaneous, versatile, acquisitive, and scattered
  8. The challenger - self-confident, decisive, willful, and confrontational
  9. The Peacemaker - eceptive, reassuring, complacent, and resigned
From How The System Works — The Enneagram Institute

But I've found this: The Riso-Hudson Enneagram Type Indicator: Estimates of Reliability and Validity: Measurement and Evaluation in Counseling and Development: Vol 36, No 4 In their sample, they found correlations among all nine enneagram types, as well as the Big Five types:
  1. +C -E . -Ent +Ref -Ind
  2. +O . +Inv -Ent +Ind -Cha -Hel
  3. +N -A +C . -Pea +Loy +Ind
  4. -O +A +C .+Loy -Inv -Ref -Ach -Ind -Hel -Cha
  5. +C +N +O . +Ref +Hel -Cha
The correlation coefficients are 0.73, 0.70, 0.62, 0.53, and 0.26

So there is a little bit of correlation between the enneagram and the Big Five.
 
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