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Module 4 · Lesson 4.4 · Experience and trust (E-E-A-T) · 3 min

E-E-A-T: the trust signals that matter for AI too

Lesson 4.4 of the AEO and GEO course: E-E-A-T (experience, expertise, authoritativeness, trustworthiness) and the trust signals that matter for ChatGPT and other AI engines too. Authors, sources, true dates, policies, reviews, why updates count, and a real case in a health category.

The video for this lesson is coming soon to YouTube. Meanwhile, the full transcript is right here.

Transcript

0:00Introduction

Lesson 4.4: experience and trust.

0:05Four words from Google

E-E-A-T is four words that come from Google. Experience: you've really done it. Expertise: you know your subject. Authoritativeness: others recognize you. And trustworthiness: you can be trusted. They come from the guidelines for Google's quality raters, not from language models. But the signals that prove them matter for AI too.

0:28Signals on your site

The rule is to show, not to claim. Saying you're experts proves nothing. You need real authors, with name, role and credentials. And sources for the data you cite. An update date that's visible, and true. And clear policies: contact, returns, privacy. Real reviews, on your site and elsewhere. And first-hand experience: cases, photos, your own data.

0:54Updating matters

Updating your content matters too. In a November 2025 analysis by SE Ranking, content updated in the last three months got almost twice as many ChatGPT citations. But update it for real: changing only the date, without changing the content, doesn't count, and it costs you trust.

1:15A real case

Let's see it in one of the strictest categories: health. The case of a women's health e-commerce brand. Every article, before going live, was reviewed by a medical editor. And it cited sources from recognized medical institutions. No miracle promises. Cautious claims, and the highest possible accuracy. The result: first place on Google for the key product-related searches, in a category where Google is especially strict.

1:44What not to do

And trust can be lost very quickly. Made-up authors, with stock photos and fake biographies. Fake reviews, on your site or bought elsewhere. And dates updated without changing anything.

1:58Your task for today

Your task for today: pick three important pages. For each one, a real author, with a role and credentials. The sources of the data you cite, and the update date, visible and true. And check that your contact, returns and privacy pages are easy to find.

2:26Next lesson

Module 4 is done. In Module 5 we write content that gets cited, starting with the answer in the first lines. See you there.

Your task

Pick three important pages. For each one, a real author, with a role and credentials. The sources of the data you cite, and the update date, visible and true. And check that your contact, returns and privacy pages are easy to find.

Track it in the course worksheet.

Sources

Checked 18 October 2026.

  • E-E-A-T in the guidelines Google gives its search quality raters: Google Search Central, «Creating helpful, reliable, people-first content» (developers.google.com/search/docs/fundamentals/creating-helpful-content), also cited in Women's Wellness Ecommerce SEO Case Study: Six #1 Rankings.
  • SE Ranking, November 2025, «How to Optimize for ChatGPT»: content updated in the last three months got almost twice as many ChatGPT citations (6.0 against 3.6). Original source: seranking.com/blog/how-to-optimize-for-chatgpt/.
  • Women's wellness case study (Women's Wellness Ecommerce SEO Case Study: Six #1 Rankings): a medical editor review for every article, references to recognized medical institutions, no miracle-cure language, conservative claims; first place on Google for the key product-related searches, in a YMYL category. Told without counts.
  • CiteProof: Content Agent with outline, sources and Article schema (Generating your first article).

End of module 4: the quiz

Five questions on the “Identity and trust” module. Get four right and you pass.

Take the module 4 quiz