01 · The Question
If Something Goes Wrong in a Study, Who Is Responsible?
A research project can involve a principal investigator, co-investigators, research assistants, supervisors, universities, hospitals, funders, sponsors, ethics committees, research sites, laboratories, data custodians, and external service providers.
So who is ultimately accountable for the research?
There is rarely a useful universal answer in the form of one person's name. Research governance generally allocates different responsibilities to different people and organizations. A lead investigator may be accountable for the conduct of the research, while an institution has responsibilities for governance and research integrity, a sponsor has defined oversight responsibilities, and a research site remains responsible for matters under its control.
The more useful question is therefore: who is accountable for which part of the project?
03 · What You Need to Know
Accountability Follows Roles, Authority, and Responsibility
Research accountability is not the same as having one person to blame
The language of "ultimate accountability" can be misleading because it suggests that responsibility must converge on a single individual. Research governance often works differently.
The UK Policy Framework for Health and Social Care Research explicitly calls for clear designation of responsibility and accountability among those involved in research, supported by clear communication and documented roles. It separately assigns responsibilities to chief investigators, research teams, funders, sponsors, research sites, employers, regulators, and health and social care providers.
Likewise, the Australian Code for the Responsible Conduct of Research assigns responsibilities to both institutions and individual researchers. The institution is not merely the researcher's administrative backdrop. It has responsibilities of its own, including establishing governance systems, supporting responsible research conduct, maintaining appropriate policies, providing training, and responding to potential breaches.
Accountability can therefore be distributed without being ambiguous.
The lead investigator is accountable for substantial aspects of research conduct
The title varies across systems. You may encounter principal investigator, chief investigator, coordinating investigator, lead researcher, or project leader. These terms are not perfectly interchangeable.
In the UK health and social care framework, for example, the chief investigator is the overall lead researcher and is responsible for the overall conduct of the research project. A principal investigator is the lead researcher at a particular site and is responsible for conduct at that site.
Lead-investigator responsibilities commonly include ensuring that the study is scientifically and ethically defensible, that required approvals are obtained, that the research follows the approved protocol, that team members are appropriately qualified and supervised, that participant protections are maintained, that data are appropriately handled, and that findings are reported responsibly.
The precise obligations depend on the applicable research framework. The role of the principal investigator in research governance should therefore be established from the rules governing the particular study rather than inferred solely from the job title.
The institution has responsibilities that cannot simply be transferred to the investigator
A university, research institute, hospital, or other research organization may have institutional responsibilities for the environment in which research occurs.
The Australian Code, for example, requires research institutions to establish good governance and management practices, identify and comply with applicable laws and policies, maintain institutional policies and procedures, provide training, support appropriate supervision, and provide systems for responsible research conduct.
Institutions can also be responsible for investigating potential breaches of research-integrity requirements and taking appropriate corrective or disciplinary action within their remit.
This means an institution cannot necessarily respond to every research problem by saying, "The investigator was responsible." Some responsibilities belong to the institution precisely because individual researchers do not control institutional governance systems.
The allocation becomes clearer when considering which responsibilities belong specifically to the research institution.
A sponsor can carry overall responsibilities without conducting the research personally
In research systems that formally recognize a sponsor, the sponsor can carry substantial governance responsibilities.
The UK Policy Framework defines the sponsor as the organization, individual, or partnership taking overall responsibility for proportionate and effective arrangements to set up, run, and report a research project. Sponsor responsibilities include ensuring that the research is appropriately designed and feasible, that investigators and sites are suitable, that roles are documented, that appropriate insurance or indemnity arrangements exist, and that suitable monitoring and oversight arrangements are established.
This does not mean the sponsor personally performs every research procedure. It means the sponsor is accountable for ensuring that appropriate systems and arrangements exist for the responsibilities assigned to the sponsor.
Importantly, a funder is not automatically the sponsor in every research system. The distinction between a research sponsor and a research funder can therefore matter when determining accountability.
Funding a study does not automatically make the funder responsible for everything
Funders also have defined responsibilities, but providing money is not equivalent to conducting, hosting, or sponsoring the research.
Depending on the framework, a funder may be responsible for assessing scientific quality before making an award, ensuring that relevant costs have been considered, attaching conditions to funding, or requiring appropriate reporting.
A funder may simultaneously act as sponsor, particularly in some commercial research arrangements. When that happens, the organization carries responsibilities associated with both roles. When the roles are separate, the responsibilities should not be casually merged.
Research sites remain accountable for matters under their control
When research occurs at a hospital, school, university, company, laboratory, community organization, or other site, that organization may carry responsibilities associated with hosting the research.
The UK Policy Framework, for example, assigns research sites responsibilities for demonstrating site suitability, knowing what research is occurring through the site, establishing local roles, and satisfying themselves that relevant approvals are in place where required.
A site may also remain responsible for ordinary duties that continue during research. In health research, a healthcare provider's duty of care to patients does not disappear because the patient has become a research participant.
This becomes particularly important when research occurs outside the researcher's own institution. The researcher's home institution and the host site may both have responsibilities, but not necessarily the same ones.
One project can therefore contain several legitimate lines of accountability
| Role |
Typical Area of Accountability |
Important Qualification |
| Lead investigator |
Scientific and ethical conduct of the research, protocol compliance, team leadership, participant protections, data integrity, and reporting |
Exact responsibilities depend on the applicable framework and whether the role is project-wide or site-specific |
| Research team member |
Competent and compliant performance of assigned research activities |
Being supervised does not remove personal responsibility for one's own conduct |
| Research institution |
Governance systems, research environment, policies, training, integrity processes, and institutional oversight |
Institutional responsibilities cannot simply be shifted to an individual researcher |
| Sponsor |
Overall arrangements for setting up, managing, overseeing, and reporting the project where the sponsor role applies |
The sponsor may delegate tasks without necessarily transferring its underlying accountability |
| Funder |
Responsibilities attached to funding, assessment, conditions, and reporting |
A funder is not automatically the sponsor |
| Research site |
Local suitability, authorization, resources, responsibilities, and activities under site control |
Site responsibility does not replace project-wide investigator or sponsor responsibilities |
| Regulator or ethics body |
Review, authorization, oversight, or enforcement within its defined remit |
Approval does not transfer responsibility for conducting the research to the reviewing body |
This table describes common governance patterns rather than universal legal rules. Research roles and terminology vary substantially among jurisdictions and disciplines.
Ethics approval does not transfer accountability to the ethics committee
An ethics committee's favorable decision does not mean the committee becomes responsible for conducting the study.
The committee assesses the proposed research within its remit. Investigators remain responsible for following the approved protocol and conditions. Institutions and sponsors retain their respective responsibilities. Sites remain responsible for matters within their authority.
This is one reason ethics approval alone may not be sufficient to begin a study. Approval is an oversight decision, not a transfer of operational responsibility.
Delegating a task does not necessarily delegate accountability
Research depends on delegation. A principal investigator may ask a research assistant to conduct interviews, a statistician to perform an analysis, a laboratory to process samples, or a service provider to manage data.
Delegation does not mean that responsibility simply disappears from the delegating party.
The current ICH E6(R3) Good Clinical Practice guideline makes this principle explicit for clinical trials: sponsors may transfer activities and investigators may delegate activities, but each retains overall responsibility for its respective activities and should maintain appropriate oversight.
The exact legal effect of delegation varies by research system and role, but the governance principle is useful more broadly. Assigning work should clarify who performs the task, who supervises it, who has authority to make decisions, and who remains answerable for ensuring it is appropriately performed.
Shared accountability should be documented before it is tested
Collaborative research is where vague responsibility becomes particularly dangerous.
If two universities collaborate, one institution hosts the data, another employs the lead investigator, a hospital provides participants, and an external company performs laboratory analyses, statements such as "we are all responsible" are not enough.
Good governance should establish who is responsible for approvals, data management, participant safety, protocol amendments, adverse-event reporting, financial management, intellectual property, monitoring, publication, records, complaints, and study closure.
Where several organizations genuinely share responsibilities, more than one institution can be responsible for the same research project without every institution being responsible for every activity.
Watch Out
"The PI is ultimately responsible for everything" is convenient shorthand but can be inaccurate. It may obscure responsibilities that legally, contractually, or institutionally belong to sponsors, institutions, sites, employers, regulators, or other parties. Identify the applicable governance framework before assigning ultimate responsibility.
