Pattern Disruption in GP speciality training: a practical intervention to enhance cognitive flexibility and diagnostic reasoning

Pattern recognition underpins efficient general practice, yet over-reliance on familiar diagnostic scripts can promote cognitive rigidity and premature closure when presentations are atypical, evolving, or socially complex. Pattern Disruption is a structured educational intervention designed to enhance cognitive flexibility in GP speciality training by deliberately interrupting routine reasoning at defined moments.Trainers introduce a single, plausible disruptor - such as a new red flag, contradictory history, contextual risk, medication issue, or system constraint - into an otherwise typical case. Trainees are required to articulate the pattern they entered, identify the assumption it generated, widen the differential diagnosis, and revise management with explicit thresholds and safety-netting. A brief, structured debrief focuses on reasoning processes, uncertainty language, and adaptive decision-making rather than factual recall.This Teaching Exchange describes the theoretical rationale, design principles, and practical implementation of Pattern Disruption across tutorials, simulation, and supervised real clinic 'pause and pivot' moments. The approach introduces novel elements, including trainee-generated disruptors drawn from near-miss experiences, counterfactual rehearsal of everyday cases, and longitudinal documentation of reasoning shifts.Early reflections suggest improved tolerance of uncertainty, clearer articulation of diagnostic risk, and more proportionate follow-up planning. Pattern Disruption is low-cost, integrates into existing GP training structures, and offers a replicable educational approach nationally.