Implicit and explicit knowledge

Implicit and explicit knowledge are two contrasting types of knowledge often discussed in the field of second language acquisition (SLA). Implicit knowledge refers to the unconscious, intuitive knowledge that learners develop through meaningful exposure and use of a language. In contrast, explicit knowledge involves conscious understanding of language rules, often acquired through formal instruction or study. A somewhat similar distinction is the one between procedural knowledge and declarative knowledge. The declarative/procedural framework focuses on memory systems—how knowledge is stored and utilized—where declarative memory typically aligns with explicit knowledge and procedural memory with implicit knowledge. However, the two frameworks are not entirely interchangeable.

These two forms of knowledge have been the subject of extensive debate among linguists, language teachers, and researchers seeking to understand how best to facilitate language learning. The debate touches on how each type of knowledge is acquired, how they interact, and the degree to which explicit instruction can foster implicit knowledge.