Research (45 CFR 46.102(l))

Whether the Common Rule applies to a given project turns on a specific regulatory test, not on how the activity feels or how much it resembles research in a colloquial sense. Under the Common Rule (45 CFR 46), “research” is defined at 45 CFR 46.102(l), and getting this definition right is the first of the two questions an IRB has to answer before review can even begin — the second being whether the activity also involves a “human subject” under 46.102(e).

The regulatory text

45 CFR 46.102(l) states: “Research means a systematic investigation, including research development, testing, and evaluation, designed to develop or contribute to generalizable knowledge.” The regulation adds that activities meeting this definition constitute research for purposes of the policy “whether or not they are conducted or supported under a program that is considered research for other purposes” — intent and framing don’t override the test.

Two elements do the actual work in that sentence:

• Systematic investigation — a planned, methodical approach to gathering and analyzing information (a defined protocol, method, or design), as opposed to an ad hoc or one-off inquiry.
• Designed to develop or contribute to generalizable knowledge — the activity is intended, from the outset, to produce findings, conclusions, or theories applicable beyond the specific individuals, records, or setting studied. This is the element that separates research from most quality-improvement, clinical-operations, and internal-evaluation work: those activities can be highly systematic without being designed to generalize.

Activities the regulation deems not to be research

Beyond the general test, 46.102(l) explicitly deems four categories of activity not to be research for purposes of the policy, regardless of how systematic they are:

1. Scholarly and journalistic activities — “e.g., oral history, journalism, biography, literary criticism, legal research, and historical scholarship” — where the collection and use of information focuses directly on the specific individuals about whom the information is collected.
2. Public health surveillance activities — those conducted, supported, requested, ordered, required, or authorized by a public health authority, limited to what’s necessary to identify, monitor, assess, or investigate potential public health signals, disease outbreaks, or conditions of public health importance.
3. Criminal justice data collection — collection and analysis of information, biospecimens, or records by or for a criminal justice agency for activities authorized by law or court order.
4. Authorized national-security operations — operational activities, as determined by each agency, in support of intelligence, homeland security, defense, or other national-security missions.

These are categorical exclusions from the definition of research itself, not exemption categories under 45 CFR 46.104 — an activity that’s deemed not to be research under 46.102(l) never reaches the exemption analysis at all, because it never meets the threshold definition that triggers IRB jurisdiction in the first place.

The practical screening question: research or not?

In practice, the category researchers and IRB staff most often have to screen against is quality improvement (QI) and program evaluation, which isn’t one of the four deemed-not-research categories above but is commonly excluded on the underlying “generalizable knowledge” element itself. A local hospital unit auditing its own hand-hygiene compliance and adjusting its own workflow is evaluating and improving a specific local process — it isn’t designed, at the outset, to produce conclusions meant to apply beyond that unit. The same logic applies to routine program evaluation, accreditation self-studies, and most internal-operations audits.

The line moves, though, the moment intent shifts toward generalizability — most commonly when a QI project’s results are later written up for external publication with claims framed as applicable elsewhere (“this intervention improved hand-hygiene compliance and could be adopted by similar units”). That reframing is exactly the determination an IRB or research-ethics office exists to catch, and it’s why institutions generally require a documented “is this research?” screening determination made by an authorized reviewer rather than left to a researcher’s own judgment — see CASRAI’s guide to the IRB/REC approval process for how that determination fits into the broader review pathway once an activity is found to be research.

Worked examples

Research (meets 46.102(l))

• A university investigator designs a multi-site survey to test whether a communication intervention changes patient medication adherence, with a pre-specified analysis plan and an intent to publish generalizable findings about the intervention’s effect. This is a systematic investigation designed to contribute to generalizable knowledge, and if it also involves obtaining data from or about living individuals it is human-subjects research requiring an IRB determination.
• A behavioral-science lab runs a controlled experiment testing a cognitive-bias hypothesis across a recruited participant pool, intending the results to inform the broader literature on the bias. Same test, same outcome — an IRB determination is required, even though the study may ultimately qualify for exempt or expedited review rather than full board review.

Not research (fails 46.102(l), or is deemed not-research)

• A clinical unit reviews its own readmission data over the past quarter to decide whether to change a local discharge checklist, with no intent to publish generalizable findings. This is quality improvement, not research, because it fails the generalizable-knowledge element — even though it’s a systematic data review.
• A state health department analyzes case reports during a disease-outbreak investigation to decide where to direct a public-health response. This is public health surveillance, expressly deemed not to be research under 46.102(l)(2), regardless of how systematic the investigation is.
• An oral historian interviews individuals about their direct experience of a historical event for a documentary project. This is a scholarly/journalistic activity deemed not to be research under 46.102(l)(1).

Why this matters operationally

The “is this research” determination is the gate that decides whether the rest of the Common Rule’s machinery — informed consent, risk-benefit review, continuing review, reportable-event obligations — applies at all. Getting it wrong in either direction has real consequences: treating a QI project as research imposes unnecessary review burden and delay on an activity the regulation never intended to reach; treating research as QI to avoid review is a compliance failure that institutions typically treat as a reportable incident if discovered after the fact, not something correctable retroactively. Because the determination is fact-specific and institution-interpreted at the margins, researchers should route the question to their IRB or research-ethics office for a documented determination rather than self-certifying, even when the answer feels obvious.

References

• 45 CFR 46.102(l) and 46.102(e) (2018 Revised Common Rule), Subpart A — Definitions
• 45 CFR 46.104 — Exempt research (a separate analysis that only applies once an activity is first determined to be research)
• OHRP, Human Subject Regulations Decision Charts