Moral Foundations Theory — Why Good People Disagree
Jonathan Haidt's Moral Foundations Theory explains why two reasonable, caring people can reach opposite moral conclusions — and why neither of them is simply wrong.
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Moral Psychology
Moral psychology asks a different question than ethics: not "what is right" but "what do humans actually do, and why." The field draws on experiments — fMRI studies, dual-process models, moral foundations theory, the bystander work — to show that intuition usually leads, and reasoning often arrives later to justify it. The articles below cover the major research strands: where moral emotions come from, why our political tribes weight values so differently, why diffusion of responsibility freezes most of us in a crowd, and the cost of acting against your own values when you had no other option. Read, then vote — and see whether the data matches the theory in your own case.
Articles in this hub
Experimental Moral Psychology — How Science Studies Why We Disagree
Experimental moral psychology uses empirical methods to study how people actually reason about right and wrong — and the findings are often surprising. We are less rational, more emotional, and more inconsistent than we believe.
Read →Why We Disagree on Ethics: The Science Behind Moral Disagreement
Smart, caring people reach opposite conclusions on the same moral dilemma. Research in moral psychology and Moral Foundations Theory reveals why — and what it means.
Read →Why Good People Do Nothing: The Psychology of Moral Inaction
Being capable of helping is not the same as helping. Research on the bystander effect, diffusion of responsibility, and moral disengagement explains why decent people walk past.
Read →The Bystander Effect: Why More Witnesses Means Less Help
The more people witness an emergency, the less likely any of them is to help. This is not callousness — it is a predictable failure of moral responsibility that psychologists have been studying since 1968.
Read →Moral Emotions: When Your Gut Feeling Is Your Moral Compass
Your gut reacts before your brain explains itself. Research shows moral emotions — disgust, guilt, elevation — are the real engines of ethical judgment.
Read →Free Will and Moral Responsibility: Do Your Choices Actually Matter?
If your brain was wired by genes and experience, are you really free? The debate over free will is not just academic — it determines whether moral responsibility makes any sense at all.
Read →What Your Trolley Problem Answer Reveals About Your Moral Personality
Most people pull the lever — but nearly half do not. The reason why reveals something deep about how your moral brain works.
Read →Moral Injury: When Survival Means Betraying Your Values
Moral injury happens when a person acts, witnesses, or fails to prevent something that violates deeply held values. It is one of the most powerful frames for modern ethical dilemmas.
Read →Why People Love Impossible Choices
Moral dilemmas are uncomfortable — yet people cannot stop sharing them. Here is what psychology says about why impossible choices are so compelling.
Read →What Your Moral Personality Profile Means
SplitVote assigns an archetype based on your votes across five moral dimensions. Here is what the axes measure and how to read your profile.
Read →Vote on live dilemmas
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