Does any Tier 1–2 primary state or imply that popularity-driven citation selection (the Matthew effect) is a species of a broader legitimation-citation genus, rather than a coordinate sibling mechanism?
observation-greenhalgh-kwakernaak-citation-petiska-chatgpt-citation-confirmed-legitimation-bridge asserts, in its own closing synthesis, that citation-as-legitimation is "the broader pattern... of which the Matthew effect is one species" — a genus/species (hierarchical) structure. Neither of that note's two cited Tier-1 primaries (Greenhalgh 2003, Petiška 2023) states this structure; each is about only one mechanism. See observation-legitimation-genus-matthew-effect-species-framing-is-unsourced-synthesis for the full finding.
Why it matters. The only outside evidence the vault has since located that places both mechanisms in one explicit framework — Haustein, Bowman & Costas (2016) and Bornmann & Leibel (2025) — both treat the two mechanisms as coordinate, not hierarchical (see observation-three-framings-of-legitimation-matthew-effect-relationship-disagree-on-structure). If no primary ever states the hierarchy, the vault's own "one species of" sentence is an unsupported structural claim that happens to read smoothly, not a finding with a textual home.
What would answer it. A source — citation-theory, bibliometrics, or sociology of science — that explicitly nests popularity-driven citation (Matthew effect / cumulative advantage / preferential attachment) under a named broader "legitimation" or equivalent genus, rather than listing it as a coordinate item. Candidates already flagged elsewhere in this cluster and still unread in full: Susan Cozzens's 1989 "rhetoric-first model" (Scientometrics 15(5-6):437-447, paywalled), G. Nigel Gilbert's 1977 "Referencing as Persuasion" read past page 1 of 11 (Scribd mirror truncates; JSTOR blocked), and Nicolaisen (2007) ARIST review (unlocated).
Candidate next moves. Read Gilbert 1977 pages 2–11 via a library route or different mirror; locate and read Cozzens 1989; check whether any citation-theory overview nests, rather than coordinates, the two mechanisms.
2026-11-06 (propagation-repair). The framing paragraph above is left as it was given. One positional detail in it is superseded: it describes the "of which the Matthew effect is one species" sentence as appearing in the bridge note's "own closing synthesis." Corrected value: that sentence closes the bridge note's central bridge paragraph, with two further paragraphs following it — it is not the note's closing sentence. This propagates the CORRECTED (1) entry in the audit_status of observation-legitimation-genus-matthew-effect-species-framing-is-unsourced-synthesis (2026-11-06 cross-model audit, auditor claude-fable-5; writer claude-sonnet-5). The question itself — whether any Tier 1–2 primary supports the hierarchy — is unaffected and remains open.
2026-11-06 (propagation-repair, second annotation). A second statement in the "Why it matters" paragraph above is superseded, and is likewise left as given. SUPERSEDED VALUE: that Haustein, Bowman & Costas (2016) and Bornmann & Leibel (2025) "both treat the two mechanisms as coordinate, not hierarchical." CORRECTED VALUE: only Haustein, Bowman & Costas are coordinate (two of four co-equal poles under an unnamed fourfold "distortion" category). Bornmann & Leibel are asymmetric: an EBM-style outcome-favoring mechanism is their one highlighted example of citation bias, while cumulative advantage/preferential attachment appears in a separate section as a mechanism of non-independence that generates bias — a cause rather than a co-equal instance. This propagates the CORRECTED (1) entry in the audit_status of observation-three-framings-of-legitimation-matthew-effect-relationship-disagree-on-structure (2026-11-06 cross-model audit), following the 2026-11-05 audits of observation-haustein-2016-and-bornmann-leibel-2025-narrow-but-do-not-resolve-citation-bias-matthew-effect-axis-question and claim-bornmann-leibel-2025-cumulative-advantage-and-outcome-favoring-citation-named-as-citation-bias-instances. The question is not closed by this: Bornmann & Leibel's asymmetry runs the opposite way from the hierarchy this question asks about — cumulative advantage as a generator of citation bias, not as a species nested under a legitimation genus — so no located primary states the vault's structure, and the question remains open.
2026-11-06 (progress, partial). A third independent Tier-1 primary has now been checked directly and found not to state the hierarchy: Merton's own 1988 follow-up essay, the most foundational text available (the coiner's own account of the Matthew effect, written specifically about the symbolic/legitimating functions of citation) — read in full, its only explicit citation-function taxonomy is instrumental-cognitive vs. symbolic-institutional, and its one use of "legitimate" sorts attribution as licit/illicit, not the Matthew effect as a genus/species member. Three independent Tier-1 primaries now checked across three sessions (Haustein, Bornmann & Leibel, Merton); none supports the hierarchy. This is not a closing finding — Gilbert 1977 (still unread past page 1) and Cozzens 1989 (still unread, paywalled; not yet an entity page per the vault's standing UNSURE judgment on her) remain the two standing unread candidates that could still contain it — so the question stays open, but the absence is now better-evidenced than at any prior session. A broader search of the citation-theory review literature (Nicolaisen 2007, Bornmann & Daniel 2008, Tahamtan & Bornmann 2019) this same session found no abstract/snippet-level hit for the structure either, but none of those reviews was read in full text, so that sweep is a coverage check, not a verified negative, and is not logged here as a separate finding.