A topic in the Open Knowledge Graph — a free, open map of 15,290 topics and the order to learn them in.
Virtue epistemology shifts the primary unit of epistemic evaluation from individual beliefs to the cognitive character of the knower, paralleling the move in ethics from act-evaluation to virtue-based character evaluation. Two major strands have emerged. Virtue reliabilism (Sosa, Greco) treats intellectual virtues as stable, reliable cognitive faculties — perception, memory, reasoning — and defines knowledge as true belief that is accurate because of the agent's competence (an epistemic 'achievement'). Virtue responsibilism (Zagzebski, Roberts and Wood) models intellectual virtues on character traits such as open-mindedness, intellectual courage, and thoroughness, holding that knowledge requires not just reliability but the right motivational profile. Both strands offer a unified response to Gettier problems: in Gettier cases the agent's true belief is not attributable to intellectual virtue but to luck, so no knowledge obtains.
Take a standard Gettier case and apply the credit condition: is the agent's true belief due to their intellectual virtue, or to fortunate circumstance? The virtue epistemologist's verdict — no knowledge, because no credit — should feel intuitively right. Then ask whether that verdict requires the reliabilist or the responsibilist account of virtue.
From your study of epistemic virtues and justified true belief, you know that traditional epistemology evaluates individual beliefs — asking whether a given belief is justified, true, and constitutes knowledge. Virtue epistemology shifts the primary unit of evaluation from the belief to the cognitive character of the knower, paralleling the move in ethics from evaluating individual acts to evaluating the character of the agent. The central question becomes not "is this belief justified?" but "is this true belief attributable to the knower's intellectual virtue?"
Two major strands have developed. Virtue reliabilism, associated with Ernest Sosa and John Greco, treats intellectual virtues as stable, reliable cognitive faculties — perception, memory, logical reasoning, introspection. On this view, knowledge is a kind of epistemic achievement: a true belief that is accurate *because of* the agent's competence, not merely a true belief that happens to be produced by a generally reliable process. The "because of" is crucial — it adds an explanatory requirement that goes beyond simple reliabilism. Virtue responsibilism, developed by Linda Zagzebski and others, models intellectual virtues on character traits: open-mindedness, intellectual courage, thoroughness, intellectual humility. This strand holds that knowledge requires not just reliability but the right motivational profile — the knower must be genuinely motivated by a desire for truth and understanding.
The credit condition is what gives virtue epistemology its distinctive power against Gettier problems. In a Gettier case — say, the fake barn county where you happen to be looking at the one real barn — your belief is true and your perceptual faculty is reliable in general. But your being right is not explained by your competence; it is explained by luck. You would have formed the same false belief looking at any of the facades. No cognitive achievement occurred, so no credit is owed, and no knowledge obtains. This diagnosis feels intuitively right and captures something that bare reliabilism misses: the difference between a belief that is reliably produced and a belief whose truth is attributable to the knower's skill.
The two strands differ on what counts as an intellectual virtue and therefore on the scope of knowledge. Virtue reliabilism can attribute knowledge to a child with good eyesight who forms a true perceptual belief, since reliable faculties are all that is required. Virtue responsibilism demands more — the agent must display admirable intellectual character, which a young child may not yet possess. This tension mirrors the parallel debate in ethics between consequentialist and character-based approaches to moral evaluation. Both strands agree, however, that epistemic evaluation is fundamentally about agents and their cognitive lives, not just about isolated beliefs, and both offer a unified framework for understanding why Gettier cases fail to be knowledge: in every such case, the truth of the belief is disconnected from the virtue of the knower.
Topics in reflective domains aren't scored by quiz answers. Read, reflect, and mark when you've thought it through.