Is decision-study.org a scam?

Treat it as one. Unsolicited “study” or “survey” sites that arrive forwarded by a family member are a classic data-harvesting pattern — the questions collect personal details, and sometimes payment information, that get resold or used for follow-up scams. Don't enter any information, and tell the relative who forwarded it, so the chain stops with you.

Educational verdict from documented scam patterns — not a live report. For a 0–100 risk score on the exact link in your hand, run the checker.