International Personality Item Pool (IPIP): Free template

Key takeaways

The International Personality Item Pool (IPIP) is a free, public-domain bank of personality items. It measures the Big Five, or OCEAN, traits: Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism.

It comes in a 120-item version (IPIP-NEO-120) and a 300-item version (IPIP-NEO-300). Both cover all 30 facets, and both hold up against the licensed NEO PI-R.

Clinicians use the results for formulation, treatment planning, client goal-setting, and tracking change across a course of therapy or coaching.

Practice management software like Pabau can deliver the IPIP as a digital intake form, so scores file straight into the client record.

The International Personality Item Pool (IPIP) is a public-domain bank of personality items that anyone can use for free. It measures the Big Five traits, and the research puts it level with the proprietary inventories most practices pay to license.

This page covers what the IPIP measures and how its two versions differ. It also walks through scoring, interpretation, and where the results fit in clinical work. The template above gives you the 120-item questionnaire in print-ready form.

What is the International Personality Item Pool (IPIP)?

The IPIP is a public-domain collection of personality assessment items developed by Lewis Goldberg at the Oregon Research Institute (ORI). It measures the Big Five personality traits, also known as the OCEAN model. Those five are Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism.

Unlike commercial personality tests, the IPIP is free to use, copy, and adapt for clinical, educational, or commercial purposes. You need no permission and you pay no fee. That makes it a practical starting point for a practice building its own assessment workflow.

What makes the IPIP different

Four things separate the IPIP from the commercial inventories it was written to replace.

• It is free and unrestricted. Copy, adapt, and translate the items without a license or a per-use fee.
• It is validated. Meta-analyses put IPIP scales alongside the NEO PI-R on internal consistency (α = .85-.90) and test-retest reliability.
• It is modular. Select only the scales your assessment needs, which keeps administration time down.
• It is multilingual. Validated translations exist for research and for practice outside English.

The items cost nothing, but the responses are still health data. Store completed assessments where the rest of the client record lives, whether that is your EMR or your psychology practice software. That keeps your HIPAA and GDPR obligations in one system instead of two.

The Big Five personality traits (OCEAN model)

The IPIP measures five broad personality dimensions, each with its own behavioral and emotional pattern. Reading them accurately is what turns a set of scores into a formulation.

Each of these five domains contains six facets that measure a narrower slice of the broader trait. Facet scores show what is driving a client’s domain score. For a shorter instrument covering the same five domains, the Big Five personality test template is the quicker option.

IPIP versions: IPIP-NEO-120 vs IPIP-NEO-300

The IPIP comes in two main forms, each built for a different context. Both measure the same five domains and the same 30 facets. They differ in item count, administration burden, and depth of insight.

For most practices, the IPIP-NEO-120 strikes the right balance between coverage and the time a client will actually give you. Reach for the 300-item version when you need facet-level detail or research-grade precision.

IPIP vs NEO PI-R: How do they compare?

The IPIP was written as a public-domain alternative to the proprietary NEO Personality Inventory-Revised (NEO PI-R), developed by Costa and McCrae. The NEO PI-R remains the reference instrument in personality research. The IPIP still carries clear advantages for cost-conscious practices and research teams.

For practices that want a validated measure without a licensing bill, the IPIP-NEO does the job. If your work depends on comparing a client against clinical population norms, the NEO PI-R is still worth its price.

Psychometric properties: Reliability and validity

Maples et al. (2014) found strong internal consistency across the five domains (Cronbach’s α = .85-.90) and test-retest reliability over six weeks (r = .75-.85). IPIP domain scores also correlate strongly with the matching NEO PI-R domains (r = .80-.95). The chart below puts all five coefficients on one scale.

Across languages and cultures, the IPIP holds its factor structure and its reliability. That makes it usable in international research and with diverse client groups. One caveat matters clinically. IPIP norms are research-population norms, not clinical ones, so interpretation calls for judgment rather than a straight comparison against clinical cut-offs.

How to score and interpret results

Scoring is straightforward. Reverse-code the negatively worded items, then average the item responses to get domain and facet scores. Responses sit on a five-point scale, from 1 (very inaccurate) to 5 (very accurate).

1. Reverse-code the negatively worded items. The IPIP includes them to reduce response bias, so flip those scores before you average anything.
2. Calculate domain scores. Average the 24 items per domain in the 120-item version, or the 60 items per domain in the 300-item version.
3. Calculate facet scores. Average the four items behind each facet, or 10 items in the 300-item version, across all 30 facets.
4. Interpret against percentile ranges. Compare scores to research norms. The 16th to 84th percentile is the average band, below the 16th is low, and above the 84th is high.
5. Read the profile against the presentation. High Neuroticism with low Extraversion may point to social anxiety. High Openness with low Conscientiousness can look like creative but disorganized thinking.

Digital administration removes the arithmetic. A form that scores itself returns domain and facet totals the moment the client submits, so nobody adds up 120 responses by hand.

Clinical applications

Clinicians and coaches use IPIP results at several points in the work. In mental health EMR software, the data supports formulation by clarifying personality-driven patterns in mood, anxiety, and interpersonal behavior. During treatment planning, the profile flags strengths and vulnerabilities worth targeting.

In coaching, the results give a client language for their own patterns. Someone high in Openness but low in Conscientiousness benefits from structure-building work. Someone low in Extraversion and high in Neuroticism may need to address social anxiety or isolation.

Repeat administrations show shifts in emotional stability, social engagement, and openness to change. Comparing scores across a year of sessions depends on finding the earlier results quickly. Most practices keep them inside their therapy practice management system, next to the notes.

How to use Pabau to administer and track IPIP assessments

Practice management software like Pabau handles the administrative side of the IPIP, from sending the questionnaire to filing the results. Digital intake forms and a secure client portal replace the printing, chasing, and manual data entry that a 120-item assessment usually creates. Here is how the workflow runs.

1. Build the IPIP as a digital intake form. Recreate the items you use in the form builder, with the same five-point response scale. Clients who prefer paper can still use the downloadable template above.
2. Send it ahead of the session. Attach the form to the appointment type so it reaches the client through the portal once the booking is confirmed. Responses arrive before the client sits down.
3. Collect responses straight into the client record. Submitted answers file against the client automatically, alongside consent forms, session notes, and treatment plans. Nobody retypes a completed questionnaire.
4. Record the domain and facet scores with the date. Store the five domain scores and any facet-level detail on the same record. Each reading keeps the date it was taken, which is what makes later comparison meaningful.
5. Repeat the assessment and compare. A second administration six months on sits beside the first in the same record. Reading the two profiles together takes seconds rather than a file search.

The outcome is a personality profile that lives where the clinical work happens. Formulation, treatment planning, and progress reviews all draw on the same stored result. The data sits inside a system built for health record security, rather than a spreadsheet or a filing cabinet.

The same forms setup carries the rest of your intake paperwork. The IPIP ends up filed next to the mental health intake form and the client’s consent records.

Run IPIP assessments inside the client record

Pabau’s digital intake forms deliver the IPIP before the appointment and file every response against the client record. Mental health, coaching, and psychology practices use it to keep personality data secure and ready to review.

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Conclusion

The choice between the IPIP and a licensed inventory usually comes down to norms. If your work depends on comparing a client against clinical population data, the NEO PI-R is worth paying for. For formulation, goal-setting, and tracking change over a course of therapy, the IPIP does the same job at no cost.

The bigger decision is where the scores end up. A personality profile in a drawer gets read once. One in the client record gets read again at the six-month review, which is when it starts to repay the session time it took.

Ready to run the IPIP digitally? Book a demo to see how Pabau’s intake forms and client records handle assessment delivery and storage.

Continue your research

Want a shorter Big Five instrument? Big five personality test covers the same five domains in a briefer format.

Need detail from a different trait model? 16pf questionnaire walks through scoring and interpretation for Cattell’s 16 factors.

Assessing a client in more depth? In-depth personality test is our template for a fuller personality picture.

Building out your intake pack? Mental health intake covers the history and risk questions that pair with a personality measure.

Curious how type-based tools compare? Jungian personality test shows how type sorting differs from trait measurement.

Frequently asked questions