- What NCJOSI² Actually Stands For
- Who Develops and Owns the Exam
- Form 1, Form 2, and the Original NCJOSI
- Exam Structure and Timing
- The 14 Content Domains Behind the Name
- Which Agencies Use the NCJOSI² Name
- Remote Testing and the Name in Practice
- Why the Exact Name Matters for Your Prep
- Frequently Asked Questions
- NCJOSI² stands for National Criminal Justice Officer Selection Inventory Squared, built by Industrial/Organizational Solutions (IOS).
- The exam pairs an 80-item Cognitive Ability Measure with a 120-statement Non-cognitive (Integrity) Measure.
- Candidates get 2 hours 30 minutes to test plus 15 minutes for instructions.
- An older, shorter "original NCJOSI" also exists, with 45 cognitive and 42 behavioral items totaling 87.
What NCJOSI² Actually Stands For
NCJOSI² stands for National Criminal Justice Officer Selection Inventory Squared. It is a pre-employment screening exam used by law enforcement and corrections agencies to evaluate entry-level candidates before hiring, not a professional certification you renew or maintain over a career. If you've landed here searching for what the letters mean, the short version is: it's a selection inventory (a test used to select job candidates), focused on criminal justice officer roles, and the "squared" designation distinguishes the current, updated version from an earlier instrument.
That last detail trips people up constantly. Several unrelated credentials in other industries share similar-sounding acronyms, and if you copy study advice, fee numbers, or exam details from the wrong one, you'll waste prep time on information that has nothing to do with the test you're actually taking. Everything in this article refers specifically to the National Criminal Justice Officer Selection Inventory Squared as developed and administered for law-enforcement hiring.
Who Develops and Owns the Exam
The exam is developed by Industrial/Organizational Solutions (IOS), and the NCJOSI² is IOS's flagship entry-level law-enforcement assessment. Because IOS controls the content, format, and administration rules, the specifics of the name, structure, and scoring all trace back to that single organization rather than a licensing board or association. This matters when you're researching the exam online: if a source describes renewal cycles, continuing-education credits, or membership dues, it is very likely describing a different credential that happens to share the acronym.
For a broader overview of what the assessment involves beyond just the name, see our companion piece on What Is NCJOSI?, and if you want the deeper meaning behind each part of the acronym, check out NCJOSI Meaning.
Form 1, Form 2, and the Original NCJOSI
IOS publishes the current exam in two parallel forms - Form 1 and Form 2 - so that agencies testing multiple candidate groups can use equivalent but non-identical versions. Both forms share the same structure: an 80-item multiple-choice Cognitive Ability Measure paired with a 120-statement Non-cognitive (Integrity) Measure scored on a five-point agreement scale.
IOS also separately lists an original NCJOSI, an earlier and shorter instrument with 45 cognitive multiple-choice questions and 42 behavioral statements, for 87 items total, administered in 1 hour 30 minutes plus 15 minutes for instructions. This is a distinct, older version - not the same test as the current NCJOSI². If your hiring agency tells you which version you're taking, confirm it, because study priorities and time budgeting differ between the two.
| Feature | NCJOSI² (Form 1 / Form 2) | Original NCJOSI |
|---|---|---|
| Cognitive items | 80 multiple-choice | 45 multiple-choice |
| Non-cognitive/behavioral items | 120 statements (5-point scale) | 42 statements |
| Total items | 200 | 87 |
| Testing time | 2 hrs 30 min + 15 min instructions | 1 hr 30 min + 15 min instructions |
| Developer | Industrial/Organizational Solutions (IOS) | Industrial/Organizational Solutions (IOS) |
Exam Structure and Timing
The NCJOSI² is built from two measures that test very different things, and understanding why the name includes both "cognitive" and "integrity" elements helps explain the structure:
- Cognitive Ability Measure: 80 multiple-choice questions assessing reasoning, perception, and communication skills relevant to officer duties.
- Non-cognitive (Integrity) Measure: 120 statements rated on a five-point agreement scale, designed to surface behavioral and character traits tied to job performance.
Total testing time is 2 hours 30 minutes, with an additional 15 minutes allotted just for reviewing instructions before the clock starts on scored content. That's a meaningful block of time to manage, and pacing across 200 total items is a skill in itself. Our NCJOSI Study Guide 2026: How to Pass on Your First Attempt walks through pacing strategies section by section.
Key Takeaway
Budget your practice sessions to mirror the real clock: roughly 2 hours 30 minutes of focused testing plus a slow first pass through instructions, so exam-day timing feels familiar rather than rushed.
The 14 Content Domains Behind the Name
The "Cognitive Ability" and "Integrity" halves of the NCJOSI² name break down into 14 specific content domains. Knowing these by name - not just vaguely - is the single biggest advantage a prepared candidate has over one who studies generic test-taking tips.
Cognitive Ability Domains
These ten domains make up the 80-item multiple-choice section and test how you reason, perceive, and communicate under time pressure.
- Deductive Reasoning
- Flexibility of Closure
- Inductive Reasoning
- Information Gathering
- Problem Sensitivity
- Selective Attention
- Spatial Orientation
- Verbal Comprehension
- Verbal Expression
- Visualization
Non-cognitive (Integrity) Domains
These four domains make up the 120-statement section and use agreement-scale statements to assess behavioral tendencies.
- Anti-Social Behaviors
- Positive Outlook
- Orderliness / Diligence
- Socialization
For a full breakdown of what each domain actually measures and sample question styles, read NCJOSI Exam Domains 2026: Complete Guide to All 14 Content Areas. If you're still calibrating how demanding the exam is relative to these domains, How Hard Is the NCJOSI Exam? Complete Difficulty Guide 2026 covers that in detail.
Which Agencies Use the NCJOSI² Name
Because the NCJOSI² is a pre-employment inventory rather than a licensing exam, individual hiring agencies - police departments, sheriff's offices, corrections departments, and similar public-safety employers - adopt it as part of their own candidate screening process. This is different from a national board issuing one universal test date to everyone; instead, each agency schedules and administers the exam according to its own hiring cycle using IOS's platform.
That decentralized model is also why eligibility requirements, application steps, and even which form (Form 1, Form 2, or the shorter original NCJOSI) you'll take can vary by employer. See NCJOSI Requirements 2026: Eligibility, Prerequisites & How to Qualify for what agencies typically expect before you sit for the exam, and NCJOSI Jobs for the kinds of officer roles this exam feeds into.
Remote Testing and the Name in Practice
Some agencies offer IOS Remote Testing for the NCJOSI². Candidate portals for remote administration typically schedule extra time beyond the core 2 hours 30 minutes to account for check-in and technical support, and they require two devices running IOS-specified secure-browser and live-proctor software. In practice, this means you may need a primary device for the test itself and a second device positioned for live proctoring - so confirm hardware requirements well before your scheduled window.
Whether you test in person or remotely, the underlying content - the same 14 domains, the same Cognitive Ability Measure and Non-cognitive Measure - doesn't change. What changes is logistics: device setup, check-in time, and proctoring software. Treat remote-testing instructions as seriously as the content itself, since a failed device check can cost you your scheduled slot.
Cognitive Foundations
- Drill Deductive Reasoning and Inductive Reasoning items daily
- Practice Verbal Comprehension and Verbal Expression passages
Perceptual Domains
- Time yourself on Selective Attention and Flexibility of Closure tasks
- Work Spatial Orientation and Visualization exercises under a clock
Integrity Measure Familiarity
- Review sample statements for Anti-Social Behaviors and Socialization
- Reflect honestly on Positive Outlook and Orderliness/Diligence patterns
Full Simulation
- Run a full 2-hour-30-minute timed practice covering all 200 items
- Confirm remote-testing device setup if applicable
Why the Exact Name Matters for Your Prep
Getting the full name right - National Criminal Justice Officer Selection Inventory Squared - isn't just trivia. It's a filter for whether the study material you're using actually applies to your exam. Search results and forums often mix in details from unrelated credentials that happen to share the "NCJOSI" letters, complete with different fee structures, different pass criteria, and different content entirely. None of that transfers.
Before you commit hours to any prep resource, cross-check it against what you now know: 80 cognitive items, 120 integrity statements, 14 named domains, developed by IOS, administered by individual hiring agencies. If a resource's numbers don't match those, it's describing something else. Related terminology questions are common enough that we've built out standalone explainers - see What Is A NCJOSI?, What Does NCJOSI Mean?, and What Is NCJOSI Certification? - if you want the terminology settled before diving into content review.
Once the name and structure are clear, shift your energy toward actual content mastery. Our NCJOSI practice test platform mirrors the domain breakdown above so you can drill Cognitive Ability and Integrity Measure items separately, then combine them into full timed simulations through our practice test hub.
Key Takeaway
Anchor every piece of prep material to the specific facts in this article - 80/120 item counts, 14 domain names, 2:30 time limit - and discard anything that doesn't match.
Frequently Asked Questions
NCJOSI² stands for National Criminal Justice Officer Selection Inventory Squared, a pre-employment exam developed by Industrial/Organizational Solutions (IOS) for entry-level law-enforcement candidate screening.
The "squared" designation distinguishes the current, expanded version of the exam from an earlier, shorter instrument that IOS also lists, which has 45 cognitive and 42 behavioral items.
No. It is a pre-employment selection assessment used during hiring, not a renewable certification or license you maintain over time.
Not necessarily. Agencies may use Form 1, Form 2, or in some cases the original shorter NCJOSI, and some offer IOS Remote Testing with additional device and software requirements. Always confirm with your specific hiring agency.
See NCJOSI Exam Domains 2026: Complete Guide to All 14 Content Areas for a full breakdown of each of the 14 domains and the type of items you'll encounter, or start practicing directly on our practice test platform.