3-Ethical issues, harm-benefit assessment and humane endpoints

Each research project has its own set of ethical challenges, but the following general questions should be raised for all projects:

  1. Have national or local research ethics committees already produced statements relevant to the research being planned?
  2. Have the Three Rs (Replacement, Reduction, Refinement) been addressed, and will any advances in this area be mentioned in publications of the study (remembering that many databases only index the title and abstract of papers)? Which non-animal alternatives have been considered but rejected?
  3. Have the Three S's (Good Science, Good Sense and Good Sensibilities) been addressed?
  4. Does the proposed study have a clear rationale and scientific relevance, and what will be the next step if the hypothesis is supported or rejected?
  5. Have the experiments been carried out before, and is any repetition justifiable?
  6. What approaches to reduce distress have been considered?

Choosing the right animal for the right reason’ (Harry Rowsell).
The large increase in use of genetically altered lines has created increasing concern about the suitability of these animals as models of human conditions. This, and the high level of attrition in animal research, is discussed in a paper by Joseph Garner (2014): The Significance of Meaning: Why Do Over 90% of Behavioral Neuroscience Results Fail to Translate to Humans, and What Can We Do to Fix It?

Ethics are also discussed in a separate section of this website

General principles
For fish researchers
  1. Have national or local research ethics committees already produced statements relevant to the research being planned? Consideration should also be paid to the broader context of the research. For example, research directed at increasing the productivity of farming at the expense of (or without improving) individual animal welfare, or wildlife research whose primary aim is population management.
  2. Have the Three Rs (Replacement, Reduction, Refinement) been addressed, and will any advances in this area be mentioned in publications of the study (remembering that many databases only index the title and abstract of papers)? Which non-animal alternatives have been considered but rejected?
  3. Have the Three S's (Good Science, Good Sense and Good Sensibilities) been addressed? Sufficient time should be allocated to this point, since two of the three S's are highly subjective, but equally important. The use of commonsense and critical anthropomorphism are justifiably part of the work to assess the impact of research on animals, not least when a scientific evidence base does not exist.
  4. Does the proposed study have a clear rationale and scientific relevance, and what will be the next step if the hypothesis is supported or rejected?
  5. Have the experiments been carried out before and is any repetition justifiable?
  6. What approaches to reduce distress have been considered?
  7. Will the project undergo pre-registration and will negative results be published, to avoid publication bias?

Many more links to resources on ethics are available here.

Details about pre-registration of animal studies and reporting of critical incidents are to be found in the section on Experimental Design and Statistical Analysis.

Harm-Benefit Assessment

An evaluation of the likely sources and level of suffering of a planned procedure, followed by an assessment of the potential benefits of the research weighed against these harms, lies at the heart of legislation in the EU and elsewhere. Advice on how to conduct a harm-benefit analysis is available in a separate section.

A framework for severity assessment and severity classification must be established and justified. The likely adverse effects of each procedure should be described, along with their likely incidence and methods of recognising them, with indications of how these effects can be mitigated by implementing refinement. This necessitates the involvement of personnel with the relevant expertise to recognise, assess and reduce animal suffering. Extensive guidance on how to manage severe suffering is available in a separate section and on the RSPCA website. Specific justification of all unalleviated animal suffering must be provided. An estimate must be made of the maximum amount of pain, distress or lasting harm to which an individual can be exposed.
The Swiss Federal Food Safety and Veterinary Office have a useful resources page on severity assessment and harm-benefit analysis, including advice on weighing the interests and the dignity of the animal.

The prediction of potential benefit from animal studies is more difficult to carry out, particularly in basic research, but a belief in overall benefit is of course implicit in all decisions to perform such research. Regulatory systems often rely heavily on self-regulation and self assessment. Whereas approaches such as Value of Information Analysis are used in clinical trials, there is a need to develop better operationalised strategies for assessing benefit when conducting harm-benefit analyses.

If the animal use is for educational or training purposes, the necessity and learning objectives of each procedure should be described. This should include whether the procedures are solely for demonstration or recording purposes, for the provision of animal tissue or for student participation. The groups who require this training should be specified. Provision should be made for feedback from participants to evaluate whether alternatives could have been used. Justification for rejection of alternative methods (including observation of on-going research) and for the severity level must be given. Guidelines are available from educators and from the EU Commission. Inventories such as the NORINA database contain comprehensive, curated information on alternatives and supplements to animal use in this area. Consultation with or development of institutional policies to support students wishing to express a conscientious objection to animal-based teaching methods should be encouraged.

Detailed guidance on how to conduct a harm-benefit assessment is available in a two-paper working group report from AALAS/FELASA (Brønstad et al. and Laber et al., 2016) and in a collection of documents available at the RSPCA website

Humane endpoints

The subject of humane endpoints is covered in a separate section.

Culture of Care

The subject of culture of care is discussed in a separate section, which is also the website of the International Culture of Care Network. Ethical discussions will be far easier to conduct of there is a climate of cooperation and care at the research facility, in which all parties have the confidence to express their feelings about a project, without fear of reprisals. Fostering a culture of care is recognised in the EU Directive 2010/63 (where it is called a climate of care) as a key element of good laboratory practice (Recital 31).

More guidance documents


Further reading


Relevant presentations from a seminar at Voss, May 2015

This page was updated on 06 July 2023

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