“Principles of ethics” is a broad phrase, but in research administration it has a specific, well-defined meaning: the small set of codified principles — respect for persons, beneficence, and justice, plus the related norms of honesty, accountability, and stewardship — that govern how research involving human participants is designed, reviewed, and conducted. This page covers that research-ethics-specific meaning: where the principles come from, how they were codified into US federal regulation, and how the same principles extend into responsible conduct of research (RCR) more broadly. It does not cover general philosophy-of-ethics frameworks (consequentialism, deontology, virtue ethics), which is a different subject with a different audience.
Why “principles of ethics” means something specific in research
Outside research, “principles of ethics” can refer to almost any normative framework. Inside a research-administration context, the phrase almost always points to one lineage of documents: a series of codes and reports written in direct response to documented abuses of research participants, each building on the one before it, culminating in the regulatory text that Institutional Review Boards (IRBs) apply today. Understanding that lineage — not abstract ethical theory — is what a research administrator, IRB coordinator, or investigator actually needs.
The historical foundations
Two documents predate and directly informed the US regulatory framework:
- The Nuremberg Code (1947) — a ten-point set of rules for the ethical conduct of human experimentation, articulated by the tribunal in the Doctors’ Trial following the war-crimes prosecution of Nazi physicians who conducted involuntary experiments on concentration-camp prisoners. It established, for the first time in an internationally recognized text, that voluntary and informed consent of the human subject is “absolutely essential.”
- The Declaration of Helsinki (1964) — adopted by the World Medical Association as an ethical framework specifically for physicians conducting medical research involving human subjects. It has been revised repeatedly since, most recently at the WMA General Assembly in October 2024, and remains the primary international ethics statement for medical research, though it is a professional-association statement rather than binding law in most jurisdictions.
The Belmont Report’s three principles
In the United States, the direct regulatory ancestor of current human-subjects protections is the Belmont Report (1979), issued by the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research. The Belmont Report distilled research ethics into three principles, each paired with a concrete application that IRBs still evaluate in every protocol review:
- Respect for persons — treating individuals as autonomous agents capable of making their own decisions, and providing extra protections to those with diminished autonomy. Applied through informed consent: participants must receive adequate information, understand it, and participate voluntarily.
- Beneficence — an obligation to maximize possible benefits and minimize possible harms. Applied through systematic risk-benefit assessment: IRBs weigh anticipated risks against potential benefits and the value of the knowledge to be gained before approving a study.
- Justice — fair distribution of the burdens and benefits of research across society. Applied through equitable selection of subjects, so that no single population — particularly a vulnerable one — disproportionately bears research risk while a different population receives the resulting benefits.
For the full mechanics of how the respect-for-persons principle is operationalized in practice, see the guide on informed consent in research.
How the Common Rule codifies the principles
The Belmont Report is a statement of principle, not a regulation. Those principles were subsequently codified into binding federal regulation as the Common Rule (45 CFR 46), which defines IRB composition and authority, the categories of review (exempt, expedited, full board), and the required elements of informed consent. Every US institution conducting federally funded human-subjects research operates its IRB/REC approval process against this regulatory text, with the Belmont principles serving as the interpretive backstop when a novel situation doesn’t map cleanly onto a specific regulatory provision.
International frameworks
Outside the US, comparable principle-to-regulation structures exist, and several international bodies maintain guidance that institutions conducting multi-country research need to reconcile with US requirements:
- CIOMS International Ethical Guidelines for Health-Related Research Involving Humans, issued by the Council for International Organizations of Medical Sciences in collaboration with WHO, most recently revised in 2016. CIOMS guidance is explicitly built on the Nuremberg Code and Declaration of Helsinki and is widely used to fill gaps not addressed by national regulation, particularly for research conducted in low- and middle-income countries.
- Outside the US, ethics review is typically conducted by a Research Ethics Committee (REC) rather than an IRB — the terminology differs but the underlying principles are the same lineage.
Beyond human subjects: principles of responsible conduct of research
The Belmont/Common Rule lineage covers research involving human participants specifically. A parallel, broader set of principles governs research conduct generally — research integrity and responsible conduct of research (RCR) — regardless of whether the research involves human subjects at all. The most widely cited international statement of these broader principles is the Singapore Statement on Research Integrity (2010), drafted at the 2nd World Conference on Research Integrity and finalized in September 2010. It sets out four principles — honesty, accountability, professional courtesy and fairness (professionalism), and good stewardship — along with fourteen more specific responsibilities covering data integrity, authorship, peer review, conflicts of interest, and reporting of misconduct. In the US, the Office of Research Integrity (ORI) operationalizes closely related values in its RCR framework and in the federal definition of research misconduct (fabrication, falsification, and plagiarism). Institutions typically deliver this material through mandatory RCR training for federally funded trainees.
How the principles show up in institutional practice
For a research-administration office, “principles of ethics” isn’t a philosophical exercise — it’s the reasoning behind specific, auditable processes:
- Protocol review: IRB/REC evaluation of risk-benefit balance and subject-selection equity before a study begins.
- Consent documentation: informed consent forms and processes built directly around the Common Rule’s disclosure and voluntariness requirements.
- Training compliance: mandatory RCR and human-subjects-research coursework, typically delivered through platforms like the CITI Program and tracked for funder audit purposes.
- Misconduct response: institutional research-integrity-officer procedures triggered when the honesty/accountability principles underlying RCR appear to have been violated.
Frequently asked questions
What are the three principles of research ethics?
In the US regulatory tradition, the three principles come from the Belmont Report (1979): respect for persons, beneficence, and justice. They were subsequently codified into the Common Rule (45 CFR 46), the regulation that governs IRB review of federally funded human-subjects research.
What’s the difference between the Belmont Report and the Common Rule?
The Belmont Report is a 1979 statement of ethical principle with no regulatory force on its own. The Common Rule (45 CFR 46) is the binding federal regulation that operationalizes those principles into specific requirements — IRB composition, review categories, and required elements of informed consent.
Do “principles of research ethics” apply outside human-subjects research?
Yes, but through a different framework. Research not involving human participants is still subject to broader research-integrity and responsible-conduct-of-research (RCR) principles — honesty, accountability, professionalism, and stewardship, per the Singapore Statement on Research Integrity — rather than the Belmont/Common Rule framework, which is specific to human-subjects protection.
How does the Declaration of Helsinki relate to US research ethics regulation?
The Declaration of Helsinki is a World Medical Association ethical statement for physicians conducting medical research; it is not itself US law. It predates and directly informed later frameworks, including CIOMS guidance, and remains influential internationally, but US federally funded research is governed directly by the Common Rule (45 CFR 46), not the Declaration of Helsinki.
What are the four principles of the Singapore Statement on Research Integrity?
Honesty, accountability, professional courtesy and fairness, and good stewardship — supported by fourteen more specific responsibilities. The Singapore Statement addresses research conduct broadly (data integrity, authorship, peer review, conflicts of interest) rather than human-subjects protection specifically.
