Source Credibility Rating System
Our rigorous methodology for evaluating the reliability of historical sources and information.
5-Point Credibility Scale
Every historical source and article is evaluated on a scale from 1 to 5 based on multiple criteria.
Highly Credible
Exceptional primary sources, multiple expert corroboration, minimal bias, transparent methodology.
Credible
Strong primary sources, good corroboration, low bias, clear methodology.
Moderately Credible
Mix of primary and secondary sources, some corroboration, moderate bias present.
Questionable
Limited primary sources, weak corroboration, significant bias concerns.
Not Credible
Lack of primary sources, no corroboration, severe bias or fabrication.
Evaluation Criteria
We assess historical sources based on seven key criteria that determine credibility and reliability.
Primary Sources
Direct historical evidence from the time period in question, such as documents, artifacts, eyewitness accounts, and contemporary records.
Corroboration
Independent verification from multiple credible sources that support the same historical facts or narrative.
Bias Assessment
Evaluation of potential political, cultural, or ideological biases that may influence the presentation of historical information.
Expertise
Credentials and qualifications of historians, researchers, or authors contributing to the historical narrative.
Transparency
Clear documentation of sources, methodology, and any limitations or uncertainties in the historical account.
Recency
How current the research is, considering new discoveries and updated scholarly consensus.
Reputation
Standing of the publishing institution, journal, or platform within the academic and historical community.
How the Rating System Works
Every historical source submitted to our platform undergoes a comprehensive evaluation by our team of expert historians and researchers. We examine each criterion individually, scoring the source based on objective standards developed through decades of academic historiography.
Primary sources—original documents, artifacts, and contemporary accounts—receive the highest weight in our evaluation. We verify their authenticity, assess their context, and determine their relevance to the historical narrative in question. Secondary sources are evaluated based on their citation of primary materials and their adherence to scholarly standards.
Corroboration is essential: we look for independent verification from multiple credible sources. A historical claim supported by only one source, regardless of its quality, cannot receive the highest rating. Bias assessment involves identifying political, cultural, or ideological perspectives that may color the presentation of facts, and we clearly document these biases for users.
The final rating reflects a holistic assessment of all criteria. A source may excel in some areas while falling short in others; our rating system accounts for this complexity. Transparency is paramount: we publish the reasoning behind each rating, allowing users to understand exactly why a source received its credibility score.
Note for Members:
Registered members of IAAH can view detailed rating breakdowns, access the full methodology documentation, and participate in the peer review process. Members can also submit sources for evaluation and contribute to our growing database of verified historical information.