Methodology

How the Observatory finds, screens, and analyzes trials, with a frozen, citable report for every release.

The Observatory’s methods are documented in full in its release reports.

Each update to the evidence record is published alongside a release report that describes both its methods and results. The reports are self-contained and frozen, and each one carries a unique digital object identifier (DOI) that permanently resolves to an archived copy—meaning you can cite the methods and numbers in the report, and they won’t disappear or change over time.

There is a separate release report for each outcome the Observatory tracks, listed below.

Mental health

Belief accuracy