C008 — ACH Matrix¶


Research	R0002 — Research Standards for AI-Assisted Writing
Run	2026-03-13
Claim	C008

Matrix¶

	H1: Accurate as stated	H2: Different domain count	H3: Oversimplification
SRC01-E01: Phase 2 covers four domains	++	--	N/A
SRC01-E02: Three phases total	N/A	N/A	+
SRC02-E01: Bristol confirms four domains	+	-	N/A

Legend: - ++ Strongly supports - + Supports - -- Strongly contradicts - - Contradicts - N/A Not applicable to this hypothesis

Diagnosticity Analysis¶

Most Diagnostic Evidence¶

Evidence ID	Why Diagnostic
SRC01-E01	Strongly supports H1 and strongly contradicts H2 -- the primary source explicitly states "four domains," which is the key differentiator between the two competing count hypotheses

Least Diagnostic Evidence¶

Evidence ID	Why Non-Diagnostic
SRC03-E01	Confirms publication existence but does not directly address domain count -- low discriminatory power across hypotheses

Outcome¶

Hypothesis supported: H1 -- ROBIS assesses exactly four domains of bias in systematic reviews. Confirmed by primary publication and institutional source.

Hypotheses eliminated: H2 -- No evidence supports a different domain count. Eliminated with high confidence.

Hypotheses inconclusive: H3 -- The four domains are part of a three-phase structure, making the claim technically accurate but structurally incomplete. This is a minor nuance, not a contradiction.