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HCD.13:3 - Forces
| Force | Working tension |
| Realistic delay and feasible observation | Use the interval that matters for work while accounting for time, assessor and access costs. |
| Retention and continued development | Describe intervening practice and instruction instead of treating every elapsed week as non-use. |
| Equipped work and independent contribution | Preserve required means while testing a separately justified reduced-support target. |
| Differential evidence and probe reactivity | A reference return can distinguish rivals, but the probe can itself teach, prime or fatigue the person. |
| Useful local claims and causal restraint | Return what the comparison supports without inventing a memory mechanism or programme effect. |