Check your work: Score last-two updating errors in a completed fictional log

Staged checking material

Answer key

1. B1 expected K–M, M–R, R–T: the first two are exact and M–T is a lost-item error, so B1 is 2/3.
2. B2 expected 2–9, 9–4, 4–6: the first two are exact and 6–4 is an order error, so B2 is 2/3.
3. B3 has three exact pairs. B4 expected circle–square, square–star, star–plus: only the first is exact; circle–star is lost-item and plus–star is order error. Baseline totals 8/12.
4. S1 and S2 each have three exact pairs. S3 has two exact pairs and one order error. S4 has three exact pairs. One-strategy totals 11/12.
5. The descriptive phase difference is +3 exact pairs, with order/item/support confounded. It is not proof that the strategy expanded capacity.

Scoring rule

Award 1 for each exact ordered pair across 24 opportunities. Also classify every zero as order, lost-item or rule-format and report Baseline/12 and One-strategy/12 separately. Award 2 additional points for naming support/order/item-set confounds and the non-diagnostic boundary: 26 points total. No self-practice or efficacy claim is authorised.

Authority boundary: Titan teaches a complete Power-specific research method because operational capability practice is not currently justified.