A Priori and A Posteriori: Meaning, Difference and Academic Writing Examples

Table of Contents A Priori and A Posteriori T wo useful expressions for academic writing are a priori and a posteriori . Both expressions describe the basis upon which a proposition, judgement, or conclusion acquires justification, but the two operate through different epistemological routes. Quick distinction: A priori refers to reasoning or justification established independently of empirical experience, whereas a posteriori refers to reasoning or justification derived through experience, observation, or empirical evidence. A Priori A priori refers to knowledge, reasoning, or justification derived independently of empirical observation or particular experience. In academic writing, the expression becomes particularly useful when an argument proceeds from reason, conceptual analysis, logical necessity, or theoretical principles before examining particular empirical cases. A priori → conceptual reasoning, logical necessity, or theoretical justification independent of empirical observation. Examp…