Deep Personality vs Open Psychometrics
They host a free, research-oriented IPIP-BFFM dump. We run IPIP-50, then an attachment overlay, then an optional two-completer comparison.
Open Psychometrics vs Deep Personality: Open Psychometrics hosts a free, research-oriented IPIP-BFFM — an individual Big Five dump from public-domain IPIP items, with no account. Deep Personality is a different job, not a clone: the IPIP-50, then an attachment overlay, then an optional partner comparison after two completers.
openpsychometrics.org and ipipneo.com are real hosts for an OCEAN personality test, a Big Five personality test, and a free Big Five test. Related: OCEAN personality test, best Big Five personality test, and free Big Five test. This page is the Open Psychometrics contrast.
What both of us do
Both draw from the public-domain IPIP. Both can leave you with five Big Five scores: Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism. OCEAN is that same list. It is a trait inventory, not a 16-type quiz.
The form differs. Their hosted form is the IPIP-BFFM (Big-Five Factor Markers). Ours is the IPIP-50: fifty public-domain Goldberg items, ten per domain, five domain scores. The extras differ too. An IPIP-BFFM chart is a finished individual result. The path here adds an attachment overlay, then a side-by-side comparison if a second person finishes.
If you already took their test and the five scores felt finished, you are not doing it wrong.
Open Psychometrics vs Deep Personality
| Open Psychometrics | Deep Personality | |
|---|---|---|
| Job | A free individual Big Five dump | IPIP-50, then attachment, then an optional comparison |
| Big Five form | IPIP-BFFM (Big-Five Factor Markers) | IPIP-50 (ten items per domain) |
| Item pool | Public-domain IPIP | Public-domain IPIP |
| Account | Not required | Free quiz first; full path after |
| Attachment | Not part of the typical dump | An attachment overlay on the IPIP-50, in the full assessment only |
| Two people | Typically one person’s chart | An optional partner comparison after two completers — not a compatibility type |
| Official IPIP site? | No — they host a form | No — we are not ipip.ori.org |
That table is a product difference. It is not a Deep Personality study, and not an accuracy percentage.
What Open Psychometrics is
- A free IPIP-BFFM Big Five test
- Public-domain IPIP items, research-oriented, no account
- Useful when you want a one-off trait chart tonight
- Typically an individual result — five factor scores, then you are done
- Not an attachment overlay
- Not this product’s IPIP-50 path
Open Psychometrics is enough when the question is “show me my five scores.” You do not owe anyone a longer test.
IPIP-BFFM vs IPIP-50
IPIP-BFFM and IPIP-50 are different forms from the same public-domain family. Goldberg’s marker work and the International Personality Item Pool are the shared literature. The hosted instrument is not the same.
We do not run IPIP-NEO-120 or IPIP-300. We do not score NEO-style facets. ipipneo.com is a complementary host for those longer facet forms. The disambiguation lives on IPIP-NEO. We are not ipip.ori.org.
We do not publish an accuracy percentage against Open Psychometrics, and we do not have a house study that beats IPIP-BFFM.
The claim is narrower: same item-pool family, different form, different extras.
Is Open Psychometrics free?
Yes. The IPIP-BFFM on Open Psychometrics is free. It uses public-domain IPIP items and does not require an account.
The first step on this site is also free: a ten-item quiz. That quiz is a teaser. It is not the IPIP-50. It does not score attachment. The full path — IPIP-50 domain scores, then the attachment overlay, then an optional partner comparison — comes after you choose to continue. Free to start is not the same product as a finished IPIP-BFFM dump.
Best free Big Five test?
There is no crown. “Best” here means a public-domain IPIP pool, clear domain scores, and an honest length — not a marketing rank and not an accuracy percentage.
Pick by the job:
- A one-off individual trait chart, no account: Open Psychometrics’ IPIP-BFFM.
- A longer free facet inventory: IPIP-NEO-120 or IPIP-NEO-300 on ipipneo.com. We do not run those forms. bigfive-test.com is another host people name for a 120-item IPIP-NEO. We do not dunk on it.
- IPIP-50 domain scores, then an attachment overlay, then a partner comparison: this path. Start at the free Big Five test, continue on the Big Five test, and read the length on IPIP-50.
Related: best Big Five personality test. openpsychometrics.org and ipipneo.com are real instruments for a free Big Five or an OCEAN test. This page is the Open Psychometrics contrast.
Open Psychometrics alternative
An Open Psychometrics alternative is not a second copy of the IPIP-BFFM page. If you want their research-style dump, stay on their site. The alternative on this site is a different sequence: a ten-item teaser, then the IPIP-50, then an attachment overlay, then an optional two-completer comparison.
That is the job when a five-factor chart is not the whole question — when you also want attachment next to the traits, or two real profiles side by side. It is complementary framing, not a quality dunk.
What you get here
After the free quiz and the full assessment:
- Five Big Five domain scores from the IPIP-50 (percentiles, not a type)
- An attachment overlay on those traits
- An optional partner comparison when a second person also finishes — the couples job, not a compatibility type
You do not get:
- An attachment result from the 10-question quiz
- A claim that our form is the IPIP-BFFM
- IPIP-NEO-120 or IPIP-300
- A statement that we are ori.org
- A diagnosis
- An invented accuracy percentage
The quiz is ten IPIP items, two per trait. It is a teaser. The IPIP-50 is the Big Five test. Attachment is later in the same full assessment.
Who should stay on Open Psychometrics
A one-off trait chart is enough. Stay on Open Psychometrics when:
- You want a free IPIP-BFFM Big Five tonight and nothing else
- You like a research-oriented, no-account dump
- You do not want an attachment overlay or a two-completer comparison in the same product
A five-factor chart is a complete use.
Who should try Deep Personality
Attachment or a partner comparison is the reason to switch. Try this path when:
- You want IPIP-50 domain scores plus an attachment overlay in one assessment
- Anxious attachment next to high neuroticism is a different week from anxious attachment next to low extraversion, and a trait chart alone cannot show that pair
- You want a partner or friend comparison after both people finish
- You are fine starting with a short quiz, then deciding whether to continue into the Big Five test
Start the free quiz. Continue into the IPIP-50 on the Big Five test page. The free-test query stays on free Big Five test. The “best” query stays on best Big Five personality test.
No invented score gap. Different products: an IPIP-BFFM dump versus IPIP-50 plus an attachment overlay and an optional partner comparison.
Sources (public literature, not a Deep Personality study)
- Goldberg, L. R. (1992). The development of markers for the Big-Five factor structure. Psychological Assessment, 4(1), 26–42.
- Goldberg, L. R. (1999). A broad-bandwidth, public domain, personality inventory measuring the lower-level facets of several five-factor models. In I. Mervielde et al. (Eds.), Personality Psychology in Europe (Vol. 7, pp. 7–28). Tilburg University Press.
- International Personality Item Pool: ipip.ori.org
- Open Psychometrics IPIP-BFFM: openpsychometrics.org/tests/IPIP-BFFM
Side-by-side
| Feature | Deep Personality | The other product |
|---|---|---|
| Big Five form | IPIP-50 domain scores (ten items per trait) | IPIP-BFFM (Big-Five Factor Markers) |
| Item pool | Public-domain IPIP — not ori.org, not IPIP-NEO-120/300 | Public-domain IPIP items; research-oriented, no account |
| First step | Free 10-item IPIP quiz — does not score attachment | Straight into the IPIP-BFFM |
| Attachment | Overlay on IPIP-50 in the full assessment only | Not part of the typical IPIP-BFFM dump |
| Two-person result | Side-by-side comparison after two completers | Typically an individual Big Five dump |
Start with the free quiz.
Ten IPIP items — a teaser, not an IPIP-BFFM clone. Continue into the IPIP-50 for five domain scores, then an attachment overlay, then an optional partner comparison.
Take the free quizFrequently Asked Questions
Open Psychometrics hosts a free, research-oriented IPIP-BFFM: an individual Big Five dump from public-domain IPIP items, with no account. Deep Personality is a different job, not a clone. We run the IPIP-50 (fifty public-domain Goldberg items, ten per domain, five domain scores), then an attachment overlay, then an optional partner comparison after two completers. The free quiz is ten IPIP items and does not score attachment.
Yes. Open Psychometrics’ IPIP-BFFM is free. It uses public-domain IPIP items and does not require an account. The first step here is also free: a ten-item IPIP quiz. That quiz is a teaser. It is not the IPIP-50, and it does not score attachment. The full path is IPIP-50 domain scores, then an attachment overlay, then an optional partner comparison. Free to start is not the same product as their finished dump.
IPIP-BFFM and IPIP-50 are different forms from the same public-domain IPIP family. Open Psychometrics hosts the IPIP-BFFM (Big-Five Factor Markers), typically as an individual five-factor chart. Deep Personality scores the IPIP-50: ten items per domain, five domain scores, then an attachment overlay and an optional partner comparison. The form differs. We are not ipip.ori.org. We do not run IPIP-NEO-120 or IPIP-300. ipipneo.com is a complementary host for those longer facet forms. We do not publish an accuracy percentage against either host.
There is no crown and no accuracy percentage. Open Psychometrics is a strong free choice for a one-off IPIP-BFFM trait chart. ipipneo.com is a strong free choice for IPIP-NEO-120 or IPIP-NEO-300 facet scores; we do not run those forms. Deep Personality is the free path when you want IPIP-50 domain scores, then an attachment overlay, then an optional partner comparison. Related pages are /free-big-five-test and /best-big-five-personality-test. The length page is /ipip-50.
No. The free quiz does not score attachment. It is ten IPIP items — a teaser, not the IPIP-50, and not the IPIP-BFFM. The attachment overlay comes later, on the IPIP-50 in the full assessment. A partner comparison is available only after two people finish.
Stay on Open Psychometrics when you want a free IPIP-BFFM chart tonight and nothing else: a research-oriented individual dump, no account, no attachment overlay, and no two-completer comparison. Try Deep Personality when the question also needs IPIP-50 domain scores next to an attachment overlay, or two profiles side by side. Start at /quiz, then continue on /big-five-test and /ipip-50. They are complementary products.