01The Research Question
“Topical authority” is used constantly in SEO discourse and rarely defined in a way that could be measured. This track tries to define it operationally — as topical map coverage completeness — and test what that completeness actually correlates with.
Coverage completeness, as used here, means two things: breadth (how many of the entities and subtopics a topic actually requires are represented on the site) and depth (how thoroughly each of those subtopics is treated, relative to what search intent for it demands). The open question is whether sites with more complete coverage recover faster, recover further, or simply recover — and whether that relationship holds across different niches or only in some of them.
02Planned Methodology
Coverage will be scored against an entity gap analysis performed at the start of each engagement, before any content was published, so the score reflects the map as designed rather than as retrofitted.
| Variable | How it will be captured |
|---|---|
| Breadth | Share of required entities/subtopics represented, from the intake gap analysis |
| Depth | Qualitative treatment score per subtopic against assessed search intent |
| Outcome | Search Console impressions/clicks/position change over a fixed follow-up window |
03Why This Is Harder Than It Sounds
Coverage completeness is not a single number, and pretending it is would misrepresent the topic.
A site can have broad coverage and shallow depth, or narrow coverage and exceptional depth, and both patterns show up in practice. Reducing that to one score risks hiding the more useful finding, which is likely to be about which dimension matters more, and in which situations. This research track will report breadth and depth as separate variables rather than collapsing them prematurely, and will flag where the two pull in different directions.
04Status and Related Reading
This is an active research track; the page will be updated as findings clear review.
For the working definition of topical authority this research is built on, see the Topical Authority pillar page. For already-published, anonymised outcomes, see Case Studies. Related tracks: Semantic SEO Research, SEO Growth Research, and AI Search Research, all indexed from the Research Hub.