Teacher cognition refers to the unobservable dimension of teaching: what teachers know, believe, and think, and how these mental constructs shape their classroom decisions and practices. It is the study of the mental lives of teachers: their knowledge systems, belief structures, attitudes, assumptions, and the thinking processes that guide what they do before, during, and after lessons.
Borg (2003, p. 81) defines teacher cognition as "the unobservable cognitive dimension of teaching: what teachers know, believe, and think." His landmark review established teacher cognition as a major research area in language teaching, demonstrating that understanding why teachers teach the way they do requires understanding what goes on in their minds, not just observing their behaviour.
Teachers are not delivery mechanisms for methods and materials. Every instructional decision, from which errors to correct, to how long to wait after asking a question, to whether to follow the textbook, is filtered through the teacher's personal system of knowledge and beliefs. Two teachers given the same lesson plan, the same materials, and the same students will teach very differently because of their different cognitions.
This has profound implications:
Borg (2003, 2006) identified three main influences on teacher cognition and its relationship to practice:
Teachers' own experiences as language learners profoundly shape their beliefs about effective teaching. Lortie (1975) called this the "apprenticeship of observation": by the time someone enters teacher education, they have spent thousands of hours watching teachers, forming deep (often unconscious) beliefs about what good teaching looks like.
These prior beliefs are:
Teacher education programmes (CELTA, DELTA, MA TESOL) aim to develop and modify teacher cognition. Research shows:
The relationship between cognition and practice is not straightforward. Teachers' stated beliefs and their actual classroom behaviour often diverge: this is the belief-practice gap. Contextual factors that create this gap include:
| Factor | How it constrains |
|---|---|
| Institutional requirements | Prescribed textbooks, syllabi, or exam prep override personal beliefs |
| Student expectations | Learners may resist approaches the teacher believes in (e.g., communicative teaching in exam-focused cultures) |
| Time pressure | Teachers default to familiar routines when under time pressure |
| Class size | Large classes make some believed-in practices (e.g., pair work, individual feedback) impractical |
| Resources | Lack of materials or technology limits what teachers can do |
| Testing culture | High-stakes exams push teachers toward test preparation regardless of beliefs about good pedagogy |
| Finding | Source |
|---|---|
| Teachers' prior learning experiences are the most powerful influence on their initial cognitions | Borg (2003); Lortie (1975) |
| Teacher education can change knowledge but changing deep beliefs requires sustained engagement | Borg (2006); Freeman & Johnson (1998) |
| Grammar teaching is the most researched area of teacher cognition in ELT | Borg (2003, 2006) |
| Teachers' grammatical knowledge often has significant gaps, which affects their confidence and practice | Andrews (2003); Borg (2001) |
| Experienced teachers' cognitions are more complex, interconnected, and context-sensitive than novices' | Tsui (2003) |
| The belief-practice gap is universal: all teachers experience some mismatch | Basturkmen et al. (2004); Phipps & Borg (2009) |
| Grammar-teaching cognitions interface with learner-oriented cognitions: how teachers perceive their pupils (level, autonomy, motivation, intellectual capability) mediates their preferences for FFI vs MFI, inductive vs deductive, explicit vs implicit, and Focus on Form vs Focus on FormS | Graus & Coppen (2017) |
Understanding teacher cognition transforms how we approach professional development:
The Cambridge English Teaching Framework implicitly addresses teacher cognition through its descriptors for self-awareness and reflection. At the Expert stage, teachers are expected to be "highly aware of own beliefs" and able to "recognise where there is a mismatch between their own beliefs and good practice"; this is essentially the ability to examine one's own cognitions critically.