Our methodology was published before we began Ferret Fact Service, and was written with reference to existing fact-check organisations and in line with the IFCN code of principles.
We use publicly available sources in all of our checks, and aim to link to primary sources where possible so readers can see how fact checks are put together, and research for themselves.
When a fact check requires interpretation of different academic sources, we will often seek guidance from experts and provide a wide range of articles, reports etc to ensure we get an accurate picture of an issue.
We regularly use graphs, tables and other charts to illustrate our fact checks, with the data source linked. Where direct linking is not possible, for example where information must be downloaded, we often rehost via Document Cloud so it can be read online.
The Ferret also has a searchable database of all of our hosted documents and data. https://theferret.scot/archive/
When the claimant sends us supporting evidence for a statement, we make clear in our fact checks what information they have provided and include it as part of our examination of the evidence.