Human research — even psychological research — hasn’t always been as ethical as it is today. Some of psychology’s most famous studies such Milgram’s Obedience Experiments, the Stanford Prison Experiment, and the Tuskegee Syphilis Study are now referred to as cautionary tales.
Here’s a brief background and the problem for each:
- Milgram’s Obedience Experiments (1960s): Participants were instructed to deliver what they believed were painful electric shocks, testing how far people would obey authority—even against their conscience.
- The Stanford Prison Experiment (1971): Volunteers were placed in mock “prisoner” and “guard” roles, revealing how quickly people could adopt abusive behaviours in systems with unequal power.
- The Tuskegee Syphilis Study (1932-1972): Hundreds of African American men with syphilis were observed without their informed consent, while effective treatment was deliberately withheld in order to study the disease’s progression.
While these studies uncovered important insights about human thinking and behaviour, they also exposed problematic demonstrations of deception, psychological distress, and denial of informed consent.
Thankfully, public outrage over such experiments led to stronger ethical protections. The Nuremberg Code (1949), followed by the American Psychological Association (APA) and Canadian Psychological Association (CPA), set the ethical standards that researchers still practice today.
Today’s regulatory bodies include Institutional Review Boards (IRBs) to review all research proposals to ensure that principles are upheld. Their role is to balance potential benefits with possible risks, ensuring human dignity remains central to science:
- Voluntary participation
- Informed consent
- The right to withdraw
- Minimizing harm
- Confidentiality
- Post-study debriefing to provide closure
Why should this matter to the public?
Because ethics in research isn’t just about protecting “subjects”—it’s about how we, as a society, decide to treat one another in the pursuit of knowledge. Reflecting on past missteps reminds us that scientific progress should never come at the cost of dignity, autonomy, or well-being. Ethical research demands both curiosity and compassion.
Reflection + Journal Prompt
The next time you read a research headline, ask yourself:
- Were the people involved respected?
- Were the benefits worth the risks?
- If it were up to me, what would I do differently?
Sources
American Psychological Association (APA). Ethical Principles of Psychologists and Code of Conduct.
Canadian Psychological Association (CPA). Canadian Code of Ethics for Psychologists.
Cherry, K. Understanding the Milgram Experiment in Psychology: A closer look at Milgram’s controversial studies of obedience.
Heintzelman, C., A. The Tuskegee Syphilis Study and Its Implications for the 21st Century.
McLeod, S. Stanford Prison Experiment.
Photo by Fulvio Ciccolo on Unsplash
