Britannica Sources used in this answer

How do descriptive and justificatory approaches to epistemology differ?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Four colored straws in a glass of water appear bent at the water's surface, visually demonstrating the refraction of light. — Epistemology The refraction (bending) of light as it passes from air into water causes an optical illusion: straws in the glass of water appear broken or bent at the water's surface.

In epistemology, the descriptive and justificatory approaches represent two distinct but often interconnected tasks.1

Descriptive Approach

The descriptive task of epistemology aims to provide an accurate depiction of features of the world and the contents of the human mind. It seeks to determine what kinds of mental content should count as knowledge and how that knowledge is actually obtained. For example, naturalized epistemology argues that the field should function solely to describe how knowledge—particularly scientific knowledge—is acquired, rather than prescribing what people ought to believe. Other descriptive efforts include phenomenology, which focuses on describing the structure of conscious experience, such as intentionality.12

Justificatory Approach

The justificatory, or normative, approach is concerned with what kinds of beliefs can be rationally justified. It addresses questions of what one ought ideally to believe, paralleling the way ethics examines how one ought to act. This approach investigates fundamental issues such as the definition of knowledge as justified true belief and the nature of justification itself. While descriptive and justificatory tasks are distinct, many contemporary philosophers view them as closely connected.13