{"id":20,"slug":"schanbacher-faqpage-product-schema-2025","title":"Schanbacher (SSRN 2025): FAQPage and Product schema strongly predict ChatGPT visibility (single-domain peer-reviewed)","kind":"reference","scope":"business","status":"current","audiences":["claude-code","candid-team"],"topics":["schema-org","ai-citation"],"reference_body":"**Claim:** Schanbacher (SSRN paper id 5641050) studied 1,508 German real-estate agent websites and found:\n\n- **FAQPage schema:** odds ratio ~**13** for ChatGPT visibility (p<0.001)\n- **Product schema:** odds ratio ~**4** (p<0.001) — sites with Product schema had **17.2% visibility vs 1.8% without** (~10× lift)\n- Mobile-friendly: OR ~5.2\n- robots.txt present: OR ~3.4\n- Multi-level headings: h2 OR ~3.3, h3 OR ~2.3\n\n**Source:** Schanbacher, \"The Impact of JSON-LD Metadata on ChatGPT Visibility,\" SSRN paper id 5641050.\n\n**Confidence:** Verified (peer-reviewed) — but **single domain** (real estate) and **single country** (Germany). Generalizability across industries/languages is unverified.\n\n**Contrasts with:** [[ahrefs-schema-no-citation-lift-2026]] (no lift on already-indexed pages). The reconciliation: Ahrefs measured *increment* on pages already cited 100+ times; Schanbacher measures *acquisition* on a population where many pages have zero AI visibility. Both findings can be true.","rationale_body":null,"metadata":null,"links":{"outgoing":[],"incoming":[{"slug":"ahrefs-schema-no-citation-lift-2026","title":"Ahrefs (April 2026): adding schema to 1,885 pages produced no AI-citation lift; AI Overviews showed -4.6%","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"google-schema-not-required-for-ai","title":"Google (May 2026): \"Structured data isn't required for generative AI search\"","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"rule-schema-as-hygiene-not-growth-lever","title":"RULE: Always ship schema as hygiene. Never expect it alone to move AI citations.","kind":"rule","scope":"business","link_type":"depends-on"},{"slug":"research-brief-structured-content-as-competitive-advantage","title":"Research brief: Structured content as a competitive advantage (piece 2 of 15)","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-05-22T18:57:39.553Z","updated_at":"2026-05-22T18:57:39.553Z"}