What Is Moral Responsibility? Definition & Theories

Question

What is moral responsibility, and what makes a person responsible for what they do? The question is among the oldest and most urgent in philosophy — it is the question of when praise and blame are deserved, and of whether anyone deserves them at all.

Quick Answer

Moral responsibility is the accountability of a person for their actions: the standing that makes it appropriate to praise or blame them, to hold them to account, and to treat them as the authors of what they do. The classical conditions of moral responsibility are two. The control condition: the person is responsible for an action only if they could have done otherwise — the action must have been in their control. The epistemic condition: the person must have known what they were doing — the action performed in ignorance, or under duress, is not one the agent can be held fully responsible for. The deepest question is the relation between responsibility and determinism: if every action is the causal product of prior events — genes, environment, history — then in what sense could the agent have done otherwise? The major positions are hard determinism (determinism is true, and it rules out responsibility), libertarianism (free will is real, and it is incompatible with determinism), and compatibilism (responsibility is compatible with determinism, because it requires not the absence of causes but the presence of reasons — the agent acts from their own values and desires, and that is enough). The modern debate, shaped by Harry Frankfurt's counterexamples and P.F. Strawson's "Freedom and Resentment," has reframed the question: responsibility is less a metaphysical fact about free will than a social practice — the practice of holding one another accountable, and the moral emotions — resentment, gratitude, forgiveness — that structure our relationships.

Historical Wisdom

The problem of moral responsibility is as old as philosophy. Aristotle saw that responsibility requires that the action be voluntary — not compelled and not performed in ignorance — and his account of the voluntary remains the foundation. The modern problem was posed by the rise of determinism: if the world is a causal system, as the new science of the seventeenth century suggested, then every action is caused, and the causes reach back beyond the agent — so how can anyone be responsible? The Enlightenment produced the three classic positions: the libertarianism of Kant and Reid (free will is a fact of the moral life), the hard determinism of d'Holbach (the free will is an illusion), and the compatibilism of Hume and Hobbes (freedom is not the absence of causes but the absence of compulsion — the free action is the one caused by the agent's own desires). The twentieth century transformed the debate: Frankfurt showed that a person can be responsible even when they could not have done otherwise, and Strawson argued that the question of responsibility is not a question about the metaphysics of the will but a question about the practice of holding one another accountable — a practice we cannot give up without giving up our humanity.

Philosophical Perspectives

The classical conditions of responsibility are control and knowledge, and each has been refined and contested. The control condition: Frankfurt's famous counterexample shows that the agent can be responsible even when the ability to do otherwise is absent — the agent who acts from their own desire, in a world where a controller would have intervened had the desire differed, is still responsible, because the controller never actually intervenes. The lesson: responsibility is about the actual causes of the action — whether it flows from the agent's own values — not about the merely hypothetical alternative possibilities. The epistemic condition: the agent must know what they are doing — but the knowledge required is debated: knowledge of the facts, or knowledge of the rightness or wrongness? The negligence case — the driver who did not know the brakes were bad, but should have — shows that responsibility extends beyond actual knowledge to the knowledge that should have been acquired.

The deepest debate is the compatibility question. Hard determinism: if determinism is true, no one is responsible — the retributive emotions and the punitive institutions rest on an illusion. Libertarianism: determinism is false, and free will is the real power of the agent to choose otherwise — the power that makes the moral life possible. Compatibilism: the question is misposed — responsibility requires not that the action be uncaused but that it be caused by the right things: the agent's own reasons, values, and character. Strawson's contribution reframes the debate entirely: the reactive attitudes — resentment, gratitude, forgiveness — are the practice of responsibility, and the question "is anyone responsible?" is really the question "can we give up the reactive attitudes?" — and the answer is that we cannot, without giving up the relationships that make us human. The question of responsibility is thus not a question about the metaphysics of the will but about the grammar of our moral life.

Lessons From Thinkers

From Aristotle: the voluntary — responsibility requires that the action not be compelled and not be performed in ignorance. From Hume: the compatibilist answer — freedom is not the absence of causes but the absence of compulsion. From P.F. Strawson: the practice — responsibility is the reactive attitudes, and we cannot give them up without giving up our humanity.

Practical Application

Moral responsibility has direct practical application. For the person: the conditions are the test of your own accountability — did I have control? Did I know? The responsibility is not the burden of the impossible but the accountability of the possible: the actions that flow from your own values and choices are the actions for which you are answerable. For the judge and the policy-maker: the conditions structure the practice of blame and punishment — the person who could not have known, or could not have done otherwise, is not the person to hold fully responsible. For the ordinary life: Strawson's insight is the deepest — the practice of holding one another responsible is the practice of the moral emotions, and the resentment, the gratitude, the forgiveness are not the mistakes of the naive but the structure of the human relationship. The responsibility is real because the relationships are real, and the practice is not to be abandoned but to be exercised with care.

Quotes

Aristotle states the foundation: "The voluntary is that which is in the agent's power and done knowingly." Strawson states the reframing: "The reactive attitudes — resentment, gratitude, forgiveness — are the practice of responsibility, and we cannot give them up without giving up our humanity." And the compatibilist summary: "Freedom is not the absence of causes but the absence of compulsion — the free action is the one caused by the agent's own reasons."

Related Questions

• Free Will vs Moral Responsibility — the compatibility debate in detail.
• What Is Applied Ethics? — where responsibility meets practice.
• What Is AI Ethics? — the responsibility gap in machines.
• What Is Moral Luck? — the challenge to the control condition.