1.3 - Ethics and participant protection
Learn to apply the BPS principles to consent, withdrawal, confidentiality, researcher competence, harm prevention, deception and debriefing.
Principles and competent research
Ethical research requires reasoned decisions throughout planning, participation and reporting. A worthwhile scientific question does not automatically justify any method used to answer it.
The British Psychological Society's Code of Ethics and Conduct is organised around four principles. H567 names these as Respect, Competence, Responsibility and Integrity. Research-specific guidance develops their application; its own headings should not be confused with the four Code of Ethics and Conduct labels.
| Principle | Central concern | Example decision |
|---|---|---|
| Respect | Dignity, autonomy, privacy and rights | Make refusal genuinely voluntary |
| Competence | Appropriate skills and recognised limits | Seek supervision before using unfamiliar equipment |
| Responsibility | Accountability and avoidance of harm | Assess distress risks and plan a stopping procedure |
| Integrity | Honesty, accuracy and fairness | Report inconvenient results and justify withheld information |
Competence means working within one's knowledge, training and experience, maintaining skills and seeking suitable help where needed. A student should not conduct a clinical interview, diagnose a classmate or use a demanding intervention merely because it seems interesting. A supervised low-risk practical is more appropriate. Ethics review checks a plan before data collection; approval does not replace the researcher's continuing duty to notice and respond to harm. BPS ethical principles.
Informed consent and withdrawal
Informed consent is a voluntary agreement based on understandable information about participation. A signature alone does not show understanding or freedom to choose.
Explain the activities, foreseeable risks, time commitment, data use and relevant limits to confidentiality. Use accessible language, allow questions and check understanding. A teacher recruiting their own pupils must consider whether pupils feel pressured to cooperate; a genuine alternative activity and an independent recruitment route can reduce that pressure. Appropriate permission and the participant's own willing agreement are needed where age or capacity requires additional safeguards; a gatekeeper's permission does not simply erase the person's wishes. BPS valid consent.
The right to withdraw includes stopping participation without punishment or pressure. Explain how to stop and what will happen to the person's data. A participant code can allow a request to remove identifiable data within a stated period. Once responses have been irreversibly anonymised or aggregated, individual removal may be impossible; make that limitation clear in advance rather than promising unlimited removal. Leaving participation and removing already collected data are related but distinct decisions.
For a low-risk memory practical, the briefing could say that participation is optional, the person can stop immediately, and they can request removal using their code until the stated anonymisation date. A researcher should respond promptly to a withdrawal rather than trying to persuade the participant to finish for the sake of the sample size.
Confidentiality and anonymity
Confidentiality means protecting information entrusted to the researcher from unauthorised disclosure. Anonymity means a response cannot be linked to the individual's identity. They are not interchangeable: a coded dataset with a separately held identity key is confidential and pseudonymised, but the key still allows identification.
Collect only necessary personal information, restrict access, store the identity key separately and securely, and report summaries that avoid identifying participants. Removing names may be insufficient if a quotation, small group or unusual combination of details identifies someone. A staff survey identifying “the only night-shift supervisor” can reveal its respondent without a name.
Researchers must explain relevant limits rather than promise absolute secrecy in all circumstances. A foreseeable serious safety concern may require an appropriate safeguarding response; plan the procedure and disclose relevant limits before consent. This lesson teaches ethical reasoning, not a universal legal disclosure rule. BPS confidentiality.
Risk protection and debrief
Protection of participants requires identifying possible physical and psychological harm, reducing it and responding if it occurs. Embarrassment, privacy loss and damage to relationships can matter even when nobody faces physical injury.
A risk assessment identifies hazards, who could be affected, likelihood and severity, safeguards, and a response if the risk occurs. For a memory task, avoid humiliating public rankings, use neutral feedback, allow breaks and stopping, and monitor distress. A pilot and appropriate supervision can reveal problems before full recruitment. Risk also concerns groups: reporting a weak finding as proof that a whole community lacks ability could stigmatise people beyond the sample. BPS risk.
Debriefing explains the research after participation, clarifies the true purpose and any withheld information, answers questions, checks wellbeing and provides relevant contact or support information. Reassure a participant that a low score was not a diagnosis of low intelligence. Where appropriate, explain the opportunity and deadline to withdraw data after learning the purpose. A debrief is not merely “thank you”, and a later explanation cannot undo avoidable distress or make an unacceptable procedure ethical. BPS debriefing.
Deception and ethical judgement
Deception involves misleading participants; withholding the exact hypothesis can also limit their information. Under integrity, researchers must justify why information is withheld rather than treating deception as a convenient standard technique.
If revealing an exact expectation would change behaviour, first consider a truthful broad description or another design. Necessary deception requires strong scientific justification, no suitable alternative, appropriate review and safeguards protecting autonomy and welfare. Do not hide foreseeable risks behind a harmless-sounding cover story. Anticipated distress or objection on discovering the deception weighs against using it. Naturalistic observation also requires judgement about privacy: being physically in a public place does not mean every sensitive interaction can ethically be recorded. BPS deception.
Imagine comparing neutral instruction formats while withholding which format is expected to work better. Explain the tasks and risks truthfully, obtain voluntary agreement, have the limited withholding approved, and debrief afterwards. In contrast, falsely telling someone that they have a serious condition creates a much greater risk; a promising research benefit and a final explanation do not automatically justify it.
Ethical judgement links the specific risk, people's rights, scientific value and feasible alternatives. It also protects trust in psychology: people may be less willing to participate if they expect exploitation. Written simulations help practise these judgements but do not certify that a learner conducted an ethically approved practical.