graph LR VPS["Variety of Practice Surfaces"]:::r1 -->|"+"| SA["Structural Abstraction"]:::r1 SA -->|"+"| SST["Schema Strength"]:::r1 SST -->|"+ with delay"| FTC["Far-Transfer Capability"]:::r1 FTC -->|"+"| PVP["Practice on Varied Problems"]:::shared PVP -->|"+"| VPS NTS["Near-Transfer Success"]:::r2 -->|"+"| SFR["Surface-Feature Reliance"]:::r2 SFR -->|"+"| PCO["Perceived Competence"]:::r2 PCO -->|"−"| PVP SFR -->|"−"| SA R1[" R1: Schema Flywheel -- reinforcing, productive "]:::looplabel R2[" R2: Surface-Match Trap -- reinforcing, corrosive "]:::looplabel classDef r1 fill:#4A90D9,stroke:#2C5F8A,color:#fff classDef r2 fill:#E8795A,stroke:#C0392B,color:#fff classDef shared fill:#7B8D8E,stroke:#4A6163,color:#fff classDef looplabel fill:none,stroke:none,color:#555,font-size:12px