Bias Detection & Source Evaluation
SIFT, lateral reading, media bias charts — the tools fact-checkers use to evaluate any source.
SIFT Method
SIFT (Caulfield)
Mike Caulfield's four-step method — used in news literacy curricula at Stanford, the Washington Post, and dozens of universities.
Stop
Don't engage emotionally. Before sharing, before reacting, check the source.
Investigate the source
Who published this? Do they have a reputation for reliability? Is this a real outlet?
Find better coverage
Search for the same claim in other reliable outlets. If only one outlet is reporting a big story, wait.
Trace claims to original context
Clickthrough to the primary source. A headline's framing often misrepresents the underlying paper or document.
Types of Bias
Kinds of bias
Ideological bias
The outlet's political orientation shapes framing. Identifiable via repeated patterns, not individual stories.
Selection bias
What's covered vs what's ignored. Every outlet makes choices about which stories matter.
Confirmation bias
Readers filter for what confirms their views. Outlets know this and play to it for engagement.
Sensationalism
Emphasizing dramatic aspects. Not the same as political bias.
Source access
Reporters dependent on sources can't burn them — creating soft bias toward access.
Bias charts
Key Points
- Ad Fontes Media's Media Bias Chart ranks outlets on reliability (y-axis) and left-right (x-axis).
- AllSides rates outlets left/center/right by story.
- Treat these as directional guides, not verdicts. Apply per-article, not per-outlet.
Lateral Reading
What is lateral reading?
Professional fact-checkers don't evaluate a site from within the site — they open 5+ tabs and read across the web about the source. Stanford History Education Group research (Wineburg & McGrew, 2017) showed this beats vertical reading for accuracy.
Key Points
- Open a new tab. Search the outlet's name + 'reliability' or 'bias'.
- Check if Wikipedia, Snopes, PolitiFact, or major wires characterize the outlet.
- Cross-reference the specific claim — if only this outlet reports it, skepticism rises.
- Find the original source cited — does the outlet's reading match?
Source red flags
Key Points
- Author credentials not disclosed or verifiable.
- No dateline / no clear publication date.
- Links to other unreliable sources.
- Emotional language in news (not opinion) pieces.
- Typos and unprofessional design — often (not always) correlated with quality.
- 'About' page vague on ownership or funding.
FAQ
What about my own bias?
Everyone has cognitive biases. Recognize motivated reasoning: if a headline makes you feel vindicated, slow down and check more carefully. If it makes you feel attacked, the same.
Is majority opinion a good proxy for truth?
On empirical scientific questions (climate change, vaccine safety) — yes. On contested normative questions (policy) — no. Calibrate to the type of claim.
Continue learning
Explore related MUN guides to deepen your skills.