It takes more cognitive energy to disbelieve information than it does to believe it. Therefore, people are often automatically more inclined to believe information than they are to disbelieve it. However, this is usually only true if one is explicitly asked to label the information as true or false.

Stimuli that are easier to process are more likely to be perceived as being true. Easy-to-read fonts, rhyming, and repetition, all make information seem more believable.

People often use their existing beliefs, schemas, and experiences to interpret information. They rarely remember information as it is presented to them but rather their interpretation of the information they received. Humans are wired to fill in gaps in information which allows for deviations and imperfections.

Knowledge is often isolated from when and how it was first learned. When recalling information one may not remember that the source of that information was unreliable. (source monitoring errors)

Knowledge is not always applied or readily recalled.(tip of the tongue state)