№ 23

Proprietary data

Expertise · Expertise

SEO impact High

Effort Hard

Estimated ROI Good

Definition

An original statistic, study or survey produced by the author.

Why it matters for Google

Unique content, a citable source for others = strong authority.

Context within the E-E-A-T framework

Expertise

Demonstration of deep formal or technical knowledge.

Official reference

Google Quality Rater Guidelines (Sept. 2025) ↗

Section 3.4 · 2.5.2

Standard requirement

Read the full guide →

Actions to implement

01
Published methodology
02
Sample specified
03
Raw download

Combine with

Dp Degree Cf Certification Pb Publication Cf2 Speaker

Read the full guide →

Check off your progress, saved in your browser.

Published methodologySample specifiedRaw downloadMeasure impact 30 days after implementation (GSC)Compare results at D+90 with a control pageAdd this element to the quarterly E-E-A-T auditDocument the implementation in the editorial logbook

Priority levelHigh

Implementation difficultyHard

Time to result3 – 6 months

Pillar reinforcedExpertise

YMYL requirementStandard

QRG section3.4 · 2.5.2

How to measure success

Audit the page before / after implementation (Screaming Frog + GSC)
Track the average position on targeted queries in Google Search Console
Watch organic CTR at D+30 and D+90
Compare with a control page that did not get the signal
Add this element to a quarterly E-E-A-T audit grid