Three-Radius Model — 认知/能力/行动三半径

Overview

Three distinct circles govern performance: what you understand (cognition radius), what you can do (capability radius), and what you actually do (action radius). These are almost never the same size — the gaps between them are where most performance is lost.

The Cognition-Capability gap is a learning and resource problem. The Capability-Action gap is an execution problem driven by fear, inertia, or misaligned incentives. Treating them as the same problem is the default failure mode.

Skill composition: Use AFTER [metacognition] to accurately place each circle. Use BEFORE [okr-goal-setting]. Complements [circle-of-competence]: circle-of-competence sets DOMAIN boundary; three-radius-model maps DEPTH layers within that domain.

When to Use

• Someone says "we know what to do but aren't doing it" — Capability-Action gap
• Someone says "we know the problem but don't know how to fix it" — Cognition-Capability gap
• Effort is not translating to results despite apparent competence
• Pre-planning skill or team development goals; post-mortem gap analysis

When NOT to use: gap is already identified and solution is purely tactical; organizational constraints (not individual gaps) are clearly the sole cause; domain too new for a cognition radius to be established.