What are the factors used to determine whether a witness is truthful and accurate?

The factors identified by Justice Dillon in Bradshaw v. Stenner, 2010 BCSC 1398 at para. 186, also play a role in assessing whether the evidence of a witness is truthful and accurate. These factors include the ability of the witness to resist being influenced by his or her interest in recalling those events; the internal and external consistency of the witness's evidence; whether the witness's evidence harmonizes with or is contradicted by other evidence, particularly independent or undisputed evidence; whether his or her evidence seems unreasonable, improbable or unlikely, bearing in mind the probabilities affecting the case; and the witness's demeanour, meaning the way he or she presents while testifying.