What is the Five-Factor Model, and is it the same as the Big Five?

What is the Five-Factor Model?

The Five-Factor Model, often shortened to FFM, is the name given to a five-dimensional account of personality built mainly through questionnaire research rather than the word-sorting studies behind the Big Five label. It describes the same five broad dimensions: openness, conscientiousness, extraversion, agreeableness and neuroticism, each a summary of narrower habits of feeling, thinking and acting that travel together in the same person.

The clearest source for the name is the NEO Personality Inventory manual, which documents an instrument built around five domains, each with six narrower facets, plus a shorter form, the NEO-FFI (Costa & McCrae, 1992). Researchers who built and used that questionnaire tend to call the structure the Five-Factor Model. Researchers who reached the same five dimensions by rating trait adjectives tend to call it the Big Five. The Big Five personality traits, explained sets out the five dimensions in plain terms.

Is the Five-Factor Model the same as the Big Five?

In practice, yes. Both names point at the same five dimensions, and most writing now uses them interchangeably. What survives is a distinction about where each name came from, not a difference in what is being measured.

McCrae and Costa (1987) tested this directly, gathering self-reports and ratings from people who knew the person well, on two kinds of instrument, adjective factors of the kind lexical researchers use and NEO Personality Inventory questionnaire scales. The same five factors turned up across all four combinations, and mean peer ratings agreed substantially with self-reports, with correlations across the five factors ranging from .25 to .62. That is evidence the structure is not an artefact of one method or one instrument, a large part of why the two names are now treated as describing one thing.

Where does each name come from?

The Big Five name traces to the lexical hypothesis: the idea that a language accumulates a word for every difference between people its speakers find worth noticing, so the trait words in a dictionary are a rough map of personality itself. Researchers sorted those words, had large samples rate themselves and each other on them, and kept recovering the same five broad clusters. Goldberg (1993) tells that history, tracing the idea from Galton through Thurstone, Cattell, and Tupes and Christal, and argues the model's standing owes a great deal to its critics, since each attempt to replace it failed to dislodge it. The lexical hypothesis covers that programme in full.

The Five-Factor Model name traces to questionnaire research, most visibly the NEO Personality Inventory, built from scale construction rather than word lists (Costa & McCrae, 1992). By 1990, a widely read review described a five-factor structure as the account personality psychology had converged on, whichever route a group had taken to reach it (Digman, 1990). John and Srivastava (1999) lay out that convergence in a standard handbook chapter. What is the NEO PI-R covers that questionnaire in detail.

Where do the two traditions agree, and where do the labels differ?

On four of the five dimensions the two traditions use the same name: extraversion, agreeableness, conscientiousness and openness or intellect are recognisably the same dimension whichever route was used to find it. Two naming differences are worth knowing before comparing results from different sources.

• Neuroticism versus Emotional Stability. Neuroticism names the dimension by its negative pole, so a high score means more worry and a faster path to upset. Many questionnaire reports turn the scale around and report Emotional Stability instead, so a higher number always means more of the quality in the name.
• Intellect versus Openness. Lexical adjective studies often labelled this dimension Intellect or Imagination, built from words about curiosity and quickness of mind. The Five-Factor Model tradition generally calls it Openness to Experience, a broader label covering aesthetic interest and unconventional thinking as well as curiosity. The disagreement is about which face of the dimension the name emphasises, not a different set of behaviours underneath it.

Does the Five-Factor Model hold up across cultures?

The clearest evidence comes from a fifty-culture study in which college students used the observer-rating version of the NEO Personality Inventory to describe an adult they knew well, producing ratings of 11,985 people. Within-culture analyses clearly reproduced the same five-factor structure found in American self-reports in most of those cultures, and it was recognisable in all of them (McCrae & Terracciano, 2005). The same study found sex differences in trait levels that were more pronounced in Western cultures, and age patterns, measured across people of different ages at one point in time rather than by following the same people over years, showing moderate differences at college age and slower differences after forty. That is broad support for the structure travelling beyond the English-speaking samples that produced the original lexical work, without claiming that every nation ranks the same way on every trait, a separate question from whether the same five dimensions organise the ratings.

How does Wellington measure this?

Wellington is a science-based personality assessment from Therabot Labs LLC. It measures personality as continuous traits, built on the Big Five and HEXACO models, and writes the results back as a personal report rather than a type.

The free Snapshot asks 60 questions, about 7 minutes, covering six dimensions: Extraversion, Agreeableness, Conscientiousness, Emotional Stability, Openness to Experience, Honesty-Humility. You answer the first ten questions before anything else is asked; after question ten you sign in with an email so your answers are saved and your results can be shown. In the written report, every trait has three pages, one per band, and your answers choose which one you read.

Every trait is reported as a percentile against the reference sample. The three bands (Quiet below the 30th percentile, Balanced to the 70th, High above) and the Portrait names exist to make the result easier to talk about; the percentile is the measurement, and it is always shown alongside. Norms are provisional until the norming sample is complete. The Wellington Membership, $4.99 a month, adds 336 further questions to reach 90 traits, including every Big Five facet and all 24 VIA character strengths, then a short weekly module toward all 255 traits. Wellington is a wellness tool for reflection, not a medical or psychological diagnosis, and it does not replace care from a qualified professional. It is not designed for hiring, and you can export or delete your data at any time.

Questions people ask

Is the Five-Factor Model the same thing as the Big Five?

For practical purposes, yes. Both names describe the same five broad personality dimensions. The Big Five name comes from lexical research on trait words (Goldberg, 1993); the Five-Factor Model name comes from questionnaire research built around the NEO Personality Inventory (Costa & McCrae, 1992). Most writing today uses the two names interchangeably.

Why does Neuroticism sometimes get called Emotional Stability?

Neuroticism names the dimension by its negative pole, so a higher score there means more worry and quicker upset. Reversing the scale and calling it Emotional Stability keeps the direction consistent with the other four traits, where a higher number means more of the quality in the name. Both are the same underlying dimension read in opposite directions.

Is Openness the same as Intellect?

They are the same dimension under two names from two research traditions. Lexical adjective studies often called it Intellect or Imagination, emphasising curiosity and quickness of mind. Questionnaire researchers in the Five-Factor Model tradition generally call it Openness to Experience, a broader label that also covers aesthetic interest and unconventional thinking.

Who came up with the Five-Factor Model?

No single person. It grew out of decades of questionnaire research, most visibly the NEO Personality Inventory (Costa & McCrae, 1992), alongside a separate lexical research programme that produced the Big Five name. Digman's (1990) review and John and Srivastava's (1999) handbook chapter are the standard references for how the two traditions came together.

Does the five-factor structure show up outside English-speaking countries?

Yes. Observer ratings gathered in fifty cultures, using a translated NEO Personality Inventory, reproduced the same five-factor structure in most of those cultures and it was recognisable in the rest (McCrae & Terracciano, 2005), evidence the structure is not limited to the English-language samples that first produced the lexical version of it.